Season 2 of "Legends of Tomorrow" had our group of misfits and anti-heroes not just jumping around the DC Universe, but also meeting historical figures from George Washington to George Lucas. Although the team fought the Legion of Doom, introduced the Arrowverse's Justice Society of America and brought back Jonah Hex, it focused more on real-world people and places.

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Now, we like trips to Camelot and feudal Japan, and we're always up for a ride around the Moon -- but "LOT" has a lot of leeway (as long as the lawyers approve) to go wherever it wants and bring in whomever it wants. Since the end of Season 2 put the Legends between a pack of dinosaurs and a futuristic skyline, we're hoping Season 3 gets even more gonzo. In that spirit, here are 15 suggestions about who we'd like as guest-stars (or even possible teammates) when "Legends of Tomorrow" returns.

WARNING: The following post contains SPOILERS for "Legends Of Tomorrow's" Season 2 finale.

15 CAPTAIN COMET

Captain Comet Punches A T-Rex

Created by editor Julius Schwartz, writer John Broome and artist Carmine Infantino five years before they revamped the Flash, Captain Comet has a quintessential Silver Age pedigree despite pre-dating the Silver Age itself. That's entirely fitting, since Adam Blake -- who debuted in June 1951's "Strange Adventures" #9 -- was a mutant born 100,000 years ahead of his time. A telepathic, telekinetic flying super-genius who can shoot energy blasts, he enjoyed a brief 1950s superhero career before leaving Earth for over 20 years. Returning in the mid-1970s, he fought the Secret Society of Super-Villains in the bad guys' short-lived series. In the '90s and '00s he popped up in space-based titles like "L.E.G.I.O.N." and "Rann-Thanagar Holy War."

Well-meaning, but never quite fitting in -- partly because he can't seem to let go of that "born ahead of time" thing -- Captain Comet is just the kind of obscure DC character who could either give the Legends a helping hand as a guest-star or grow into a quirky teammate. We like the idea of a humble powerhouse mixing it up with the Legends, so we'd be happy either way.

14 ANTHRO

We know dinosaurs didn't live at the same time as Cro-Magnons or Neanderthals, but when we saw those terrible lizards roaming around the Waverider we thought immediately of Anthro. Created by Howard Post, Anthro followed up his debut in March 1968's "Showcase" #74 with a series which lasted just six issues. Nevertheless, he's been a popular Easter egg for time-spanning series like "Crisis On Infinite Earths" and "Booster Gold;" and he was part of another team of Z-list heroes in Brian Azzarello and Cliff Chiang's sublime "Dr. 13: Architecture & Mortality" miniseries (serialized in 2006-07's "Tales of the Unexpected" anthology).

As the first Cro-Magnon born to Neanderthal parents, Anthro is literally ahead of his time. In this respect we're surprised no one has ever done an Anthro/Captain Comet team-up, so here's "LOT's" opportunity. Sadly, since being the next step in human development is a relative thing, we can't see Anthro adding much to the team on a long-term basis. In any event, we look forward to the Legends interacting with one of their earliest ancestors.

13 KAMANDI

Since the immortal Jack Kirby entered this world on August 28, 1917, DC is celebrating his 100th birthday all throughout 2017. This includes the current "Kamandi Challenge" miniseries, featuring Kirby's proverbial "Last Boy On Earth." (In fact, Kamandi's first issue was cover-dated October 1972, which means it came out 45 years ago this June.) What better time to bring one of his signature creations to the small screen? For those who came in late, Kamandi was raised by his grandfather in the remains of an old military bunker designated "Command D;" and lives on a post-apocalyptic Earth populated by intelligent animals. Sounds like just the kind of setting the Legends need to visit, right?

Since the "Great Disaster" which caused this upheaval appears to be in Earth's near future, fitting Kamandi into the main DC timeline has been problematic; although it didn't stop him from teaming up with Batman or Superman. We suspect the Great Disaster isn't part of Earth-1's timeline -- the comics' "Multiversity" placed Kamandi and friends on Earth-51 -- so naturally, this would go along with the Legends' mission to set things straight. However, part of that correction could also lead into our next possibility....

12 TOMMY TOMORROW

Created by writers Jack Schiff, George Kashdan and Bernie Breslauer, and artists Virgil Finlay and Howard Sherman, Tommy Tomorrow is one of DC's oldest sci-fi characters. Debuting in January 1947's "Real Fact Comics" #6, his initial comics career lasted into the 1960s, with stints in "Action Comics" (125 issues), "World's Finest Comics" (23 issues) and a "Showcase" revamp (5 issues). As a Colonel in the space-faring Planeteers of the year 2050, essentially Tommy was of a piece with Atomic Age peacekeepers like Captain Video and Rocky Jones.

We want him on "LOT" not just because they could call the episode "Legends of Tommy," but also because the show still hasn't really riffed on a quasi-generic space military along the lines of Starfleet or "Firefly's" Alliance. (The Time Masters don't count, since they were concerned specifically with protecting the timeline.) Besides, if "LOT" uses Kamandi, it might as well bring in Tommy. In one version of DC's timeline, the Great Disaster never happens and the boy found in the Command D bunker grows up to be Tommy himself.

11 SPACE CABBIE

"Hal Jordan and the Green Lantern Corps" just brought back Space Cabbie as a grizzled interstellar informant, but in the mid-1950s he was a staple of the "Mystery In Space" anthology. Created by Otto Binder and Howard Sherman for August-September 1954's "MIS" #54, the Cabbie appeared regularly in the book over the next two-and-a-half years. Not surprisingly, his adventures revolved around the passengers he picked up; but he always managed to get through things unscathed.

While we're not sure Space Cabbie has Legend potential -- for one thing, we've never learned his real name -- he does have a reputation for being able to ferry people successfully from one end of the universe to the next. "LOT" is probably overdue for an interplanetary adventure, and Space Cabbie would be a fun guest-star either on his own (Space-Uber!) or in conjunction with Tommy Tomorrow. If the Legends ever make it to the 22nd Century's space-lanes, we hope Space Cabbie gives them a lift.

10 R.J. BRANDE

"Supergirl" may have the inside track on introducing the CW's version of the Legion of Super-Heroes, but that doesn't mean the Legends can't meet a younger version of their benefactor. Rene Jacques Brande was introduced in November 1966's "Adventure Comics" #350, written by E. Nelson Bridwell and pencilled by Curt Swan. Born a Durlan named Rene Daggle, a disease froze the future zillionaire in human form; and when the proto-Legionnaires saved him from assassins, he decided to turn them into a super-team.

Prior to his being frozen, the long-lived Daggle was also part of the present-day L.E.G.I.O.N. group formed by Brainiac 5 ancestor Vril Dox; so "LOT" has some options when it comes to meeting him. However it happens, we imagine its version of Brande as something like the young Howard Stark from "Captain America: The First Avenger" and "Agent Carter" -- an outsized personality with the means and talent to back up his boasts. We imagine that in true "LOT" fashion, they'll inspire him to make sure the Legion reaches its full potential.

9 BAT LASH

In each of its seasons so far, "Legends of Tomorrow" has gone to the Old West; and in each episode, it's met up with Jonah Hex. We love Hex, but we'd like Bat Lash to give the Legends a different perspective on this particular era. Created in a complex collaboration among Carmine Infantino, Joe Orlando, Sheldon Mayer and Sergio Aragonés, Bat Lash first appeared in August 1968's "Showcase" #76. His own short-lived series was plotted by Aragonés, scripted by Denny O'Neil and drawn by Nick Cardy. Since then he's appeared in various miniseries and guest shots, and has met superheroes in "Justice League of America" and "Crisis On Infinite Earths."

As opposed to the grim Jonah Hex, Bat Lash is a womanizer, pacifist and gambler who wears a flower on his hat and depends on his wits to get him out of trouble. We can see him charming the Legends (or trying to, at least) while he subverts time-honored Western tropes. Better yet, we'd love to see him and Hex teamed up, just to watch Hex's slow burn.

8 SGT. ROCK AND EASY COMPANY

If "LOT" ever goes back to World War II, it needs to introduce Sgt. Rock and the combat-happy joes of Easy Company. Created by Bob Kanigher and Joe Kubert, Rock's first proper appearance (after a couple of prototypical stories) was in June 1959's "Our Army At War" #83. Over the next few decades, Rock became a part of DC history in more ways than one, as Kanigher and Kubert helped define what a war comic could be. Rock's exploits might have been set in World War II, but they reflected changes in attitude and perspectives concerning America's military.

While Rock himself is pragmatic -- often reminding his men that "nothing's ever easy in Easy" -- he's also fearless and not without compassion. Incorporated into the DC Universe gradually, he and his men never interacted much with the Justice Society or other wartime characters, so a "LOT" guest appearance would probably be more realistic than, say, Civil War zombies. That puts some pressure on the show, but if "LOT" can pull it off, it'd be worth it. In the end, Rock's years of service deserve a good bit of respect.

7 THE BLACKHAWKS

On the other hand, for a more colorful approach to WWII history, the Legends could visit the Blackhawks' corner of the war. Created by Chuck Cuidera (with help from Bob Powell and Will Eisner), the Blackhawks first appeared in August 1941's "Military Comics" #1. A multinational group unaffiliated with any single country, the Blackhawks flew distinctive Grumman XF5F Skyrockets and yelled "Hawk-a-a-a!" for a battle cry. After World War II ended, the Blackhawk squadron went through a number of incarnations. In the postwar era, they ran missions for the embryonic C.I.A. before developing eventually into a private security/courier firm. Indeed, both "Arrow" and "The Flash" have done episodes featuring Blackhawk Security.

Still, we're talking about the Blackhawks in their prime. Having them on "LOT" would probably mean fighting sci-fi-style weapons like the giant armored War Wheel -- definitely worth stretching the show's budget -- and/or supervillains like King Condor or Mister Missile. "LOT" could also take a page from "Birds Of Prey" and introduce a time-lost Lady Blackhawk (who'd be a contemporary of Vixen) as the Waverider's pilot.

6 CAVE CARSON

If there's something strange under your neighborhood, who you gonna call? Currently starring in his own Young Animal series -- guest-starring Wild Dog, in fact -- Calvin "Cave" Carson is a venerable DC character created by France Herron and Bruno Premiani. He debuted in August 1960's "Brave and the Bold" #31, right after the Justice League's introductory issues; and after a brief stint there, enjoyed a few issues of "Showcase." He then disappeared for about 18 years, popping up as part of the aptly-named Forgotten Heroes in the early 1980s. After that, he would show up as the DC Universe's designated geologist, something every big superhero realm needs.

An adventurer in the "scientist-plus-familial-unit" mold along the lines of Rip Hunter, the Sea Devils and any number of 1950s B-movies, Cave's main piece of his equipment is his boring machine -- as in, it bores through the earth -- called the Mighty Mole. Cave also has a small group of associates, although his current series put him on the outs with most of them. Like Aquaman, he seems tied to one particular environment; but that doesn't mean he can't be entertaining. After all, the Waverider doesn't seem that useful underground.

5 NILES CAULDER

When the Legends went to the Soviet Union in Season 1, they ran afoul of a scientist named Valentina Vostok, known to comics fans as Negative Woman of the New Doom Patrol. We hoped to see her joined with the Negative Being and even part of the Patrol itself, but no dice. Still, "LOT" could introduce the calculating mind behind the Doom Patrol, Niles "The Chief" Caulder. Created by Bob Haney, Arnold Drake and Bruno Premiani, the Chief debuted in June 1963's "My Greatest Adventure" #80.

One of the world's smartest people, Caulder worked alone until a run-in with General Immortus cost him the use of his legs. He then formed the Doom Patrol using outcasts who he saved via super-science. (Eventually he admitted to capitalizing or even causing their accidents.) Over the years, he's gone from encouraging facilitator to amoral mastermind and (perhaps?) back again, but he's always sure he's doing the right thing. Of course, the Legends might not see it that way...

4 THE CHALLENGERS OF THE UNKNOWN

Challengers of the Unknown battles a giant squid monster

If Season 2 felt comfortable introducing the Justice Society of America, it should be easy for Season 3 to have the Challengers of the Unknown as recurring guest-stars. Jack Kirby created the Challengers (possibly with the help of Dave Wood or Joe Simon) for February 1957's "Showcase" #9. They were quartet of talented -- some might say "fantastic" -- individuals from different walks of life who were brought together by a plane crash which should have killed them. Accordingly, pilot "Ace" Morgan, daredevil "Red" Ryan, fighter "Rocky" Davis and scientist "Prof" Haley reasoned that they were "living on borrowed time," and dedicated their lives to exploring the strange and extraordinary.

The Challengers later added archaeologist June Robbins; and the group has reorganized a couple of times, so the Legends could meet them at different points in their history. Regardless of era, though, the Challengers represent the almost-forgotten "New Frontier" period between the JSA's retirement and the emergence of straight-up superheroes. That would let them straddle "LOT's" need to explore the DC Universe and its desire to incorporate real-world situations. Besides, 2017 is Kirby's centennial, and the world can always use more of the King.

3 METAMORPHO

So far the closest Metamorpho the Element Man has come to the Arrowverse have been appearances by Stagg Industries, the company run by his would-be in-laws. Created by Bob Haney and Ramona Fradon, Metamorpho debuted in January 1965's "Brave and the Bold" #57 and got his own series shortly thereafter. Adventurer Rex Mason became a reluctant superhero after exposure to a radioactive meteorite transformed adventurer Rex Mason into a multi-colored, multi-textured man who could change himself into any combination of elements. Originally Metamorpho refused JLA membership, instead becoming a reserve member and then joining the Outsiders when Batman left the League. Eventually, though, he became a full-time Leaguer, starting with the founding of Justice League Europe.

Metamorpho's regular-guy personality would be right at home on "LOT," and his elemental powers would be less CGI-intensive than Firestorm's. The ancient-Egyptian aspect of his origin also fits well with the show's "historical" theme. Besides, he's already been part of the "Legends of Tomorrow" anthology miniseries in the comics, so adding him to the show seems like the next logical step.

2 HOURMAN

We're not talking about the JSA's Hourman, whom the Reverse-Flash killed early in Season 2. Instead, this is the android/intelligent machine colony who was created by Grant Morrison and Howard Porter and debuted in November 1997's "JLA" #12. Constructed in the 853rd Century by Tyler Chemorobotics, Hourman (a.k.a. Matthew Tyler) was a member of the far-future Justice Legion A who traveled back in time to join first the present-day League and later the Justice Society.

At first, Hourman was practically omnipotent, able to navigate and manipulate time effortlessly; but de-powered himself voluntarily to prevent abuse of his powers. The more mundane of these included super-strength, super-speed, invulnerability, flight and heat-vision. We suspect the Legends would be most interested in two things: his ability to control space-time, and the map thereof called the Worlogog. While either of those would go a long way towards repairing a broken timeline, Hourman can only use his time powers for one hour per day. Even with all of those restrictions, he could make Season 3 either very short or very interesting.

1 JACK KNIGHT

Season 2 revealed that the Justice Society dispersed into different eras to protect the pieces of the Spear of Destiny. Still, as Citizen Steel and Vixen have shown, that doesn't preclude the existence of JSA legacy characters. Although Stargirl chose to stay in Arthurian England, we'd like to see her relative Jack Knight take up the Cosmic Staff -- however reluctantly -- and team up with the Legends, however briefly.

Created by James Robinson and Tony Harris, Jack debuted in September 1994's "Zero Hour" #1; but his real first issue was October 1994's "Starman" #0. Now remembered as one of DC's signature legacy characters, Jack's story was one of the 1990s' most intricate. It brought together all the Starmen to date, mixed in the Knight family's history and layered on top the history of Opal City. If there's a downside to introducing Jack, it's that all his backstory could threaten to overwhelm everyone else's. Still, since there's an Opal on both Earth-1 and "Supergirl's" Earth-38, and since we've already seen Stargirl, introducing Jack wouldn't be that hard. Between his ancestor and his attitude, he'd be a fine fit.

Who do you want to see in "Legends Of Tomorrow" Season 3? Let us know in the comments!