When a superhero has a long history like Batman, there are bound to be characters who come and go. Case in point, Aunt Harriet, Ace the Bat Hound, and, Dick Grayson. Sometimes, these people last for decades, disappear, and come back (looking at you, Bat-Mite). Other times, they stay for a bit, make a huge splash when introduced, then fade away faster than George Clooney's version of the Dark Night. Oh, right, that's a nightmare no one can shake.

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Even during a ten-year span characters can be introduced and vanish into the ether. As the DC Universe encountered an enormous time-shifting, reality-altering, underwear on the outside-disappearing period in the 2010s, there are some characters that dropped off the Bat-scope due to lack of interest or forgetfulness. Here are 10 characters introduced in the various Batman titles in the 2010s that are already forgotten.

10 Batwing (Luke Fox)

This character was introduced during the first wave of New 52 books. At first, he was David Zavimbe, a police officer from the Republic of Congo who joined the Caped Crusader under Batman Incorporated. When David resigned due to a number of life events, Luke Fox took over.

The Batwing series lasted for 34 issues, and Luke reached a point of popularity that garnered him an animated introduction in Batman: Bad Blood. Since then, not much has been seen of the character. Then again, with Bane running Gotham for a period of time, waltzing down the city streets in his bat armor would have not been the best of ideas.

9 Nightrunner

Another member of Batman Incorporated, the character was introduced in the 2011 Batman and Detective Comics annuals. The goal of his creator, David Hine, was to reflect the ongoing issues inside the Paris projects of Clichy-sous-Bois. Plus, France never had a Batman before. Overall, they found his black-on-blue ensemble somewhat gauche.

In real life (of comics), Nightrunner was Bilal Alsselah, a French-Algerian with superior athletic and parkour abilities. His goal was to help both sides in the ongoing crisis understand each other. After his initial appearance, Nightrunner disappeared. Although, he might have dyed his costume all black and given it to Peter Parker when he was Venice. Hence, Night Monkey was born.

8 Geri Powers

During a period when people thought the original Batman was dead ... again ... Gotham City prayed for his return. Enter Police Commissioner and chain-smoker James Gordon. Buff, bald, and controlling a robotic suit that made Voltron jealous, Gordon became the newest Batman. It wouldn't have been possible if not for Geri Powers.

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The matriarch of the wealthy and influential Powers family, she acquired the defunct Wayne Enterprises and firmly encouraged Gordon to wear the suit. She was an important part of the Batman mythos during his tenure. However, once Bruce donned the cape and cowl again, Geri vanished. She's now one of the Shark Tank investors.

7 We Are Robin

At the same time Jim Gordon continually uttered "I. Am. Batman." to himself, a group of Gotham City kids got together to honor the original Bat's partner. They became the Robins and spent several issues battling villains, both street and Rouges Gallery-level. Eventually, Duke Thomas, a teen who had helped Batman in the past, became their leader.

Once Bruce recovered his memories to become the one true Batman, only Duke was given a chance to train with him. First as a Robin, then as The Signal. Meanwhile, the other Robins got together and became The Stoplights. However, it didn't have the same ring to it, so they disbanded.

6 Bluebird (Harper Row)

Harper began her life in a cameo appearance during Batman's New 52 reintroduction. In that issue, her brother Cullen is rescued by the Dark Knight. In turn, she becomes obsessed with the Bat. She even stops using Snapchat, Yes, that was meant to rhyme.

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Eventually, her electrical engineering skills and respect from Red Robin (Tim Drake) encouraged her to don a costume and become the hardened and ruthless vigilante known as ... is this right? ... Bluebird. However, after she learned her mother's death was at the hands of a brainwashed Cassandra Cain, Harper decided to give up the world of superheroes and concentrate on her college life. Today, she works as a Tier 2 technical support engineer and starts every call with, "I. Am. Bluebird."

5 Dollmaker

Now here's a cheery character. Barton Mathis became the third Dollmaker in the first Detective Comics issue of the New 52 era. A skilled surgeon, he had the honor (?) of cutting the skin from the Joker's face. In other words, this was the start of buddy comedy.

Eventually, Dollmaker meets up with Batman and hilarity ensues as the Caped Crusader ends up on the auction block. After escaping, the Dollmaker sews the Joker's face onto his "daughter" and joins the Crime Syndicate of America during the "Forever Evil" event. Today, Mathis is creating a new line of skin-masked Barbie dolls. Boy, there was a creepy vibe just writing that joke.

4 Batman: Earth One

After the success of Superman: Earth One, the creative power team of Geoff Johns and Gary Frank released Batman: Earth One in 2012. In this version, a mugger kidnaps the young Bruce and kills his parents. The man who is initially brought in by Thomas Wayne for security purposes, Alfred Pennyworth, becomes the young Wayne's sarcastic mentor with a lack of cooking skills.

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There were only two volumes featuring this version of the Caped Crusader. They introduced The Penguin as a corrupt mayor of Gotham City, the Riddler, and a svelter Detective Bullock. After that ... nothing. Since the Barbara Gordon of that world planned to become a "Batgirl," perhaps she took over Bruce's mantle. Meanwhile, he and a good-looking cat burglar he met in Volume Two headed to Europe where they met Michael Caine. Hmm, that would make a good ending to a movie.

3 Talon

Who's Talon? Have you forgotten so soon? Right, this is about the Batman characters you've forgotten. This particular Talon, who goes by the name of Calvin Rose, was the only one ever to escape from the Court of Owls. Instead of becoming a replacement for Harry Potter's pet owl Hedwig, Calvin decided to take a stab at heroics in a series that premiered in 2012.

After 17 issues, three animated series, a live-action movie starring Jean Claude van Damme, and a sitcom, Talon was added to the roster of Batman Incorporated. When that business folded due to tariffs, Rose vanished off the face of comic book pages. Though, there is talk of him being the new leader of the Legion of Super Pets.

2 Merrymaker

Merrymaker can be considered the antithesis of Harley Quinn. At first, both were psychiatrists at Arkham Asylum in charge of knocking the smile off of Joker's face through ink blots and constantly asking, "How does that make you feel?" However, where Harleen went a little nuts and became Joker's partner/sidekick, the man who became Merrymaker, Byron Meredith, opened a practice for those obsessed with the Clown Prince of Crime.

In addition, while Harley got a little less crazy, Bryon went down the rabbit hole. He became the villain Merrymaker, founded the League of Smiles, and started killing those who did him wrong. Eventually, he was captured and returned to Arkham as a patient. Meanwhile, the League of Smiles Dental Center opened in Gotham last year. Merrymaker has filed a copyright infringement suit.

1 The Victim Syndicate

Introduced after Tim Drake allegedly died -- like all of the Bat Family does -- The Victim Syndicate was comprised of people who were harmed one way or another by The Bat. Their leader was The First Victim, the initial person to be harmed once Batman started his crusade against crime. If one considers the hero's long history, The First Victim would logically be around 110-years-old.

In the end, the reason for the Victim Syndicate's being was to highlight the anger and sadness the Bat Family felt about Tim's death, with The First Victim being the impetus they needed. However, since their 2016 introduction, they haven't been seen. Perhaps they'll merge with the Court of Owls in another arc to become the Syndicate of Owl Victims. Then they can blame everything on Hogwarts.

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