Deadline has word that a possible spinoff of "Arrow" and "The Flash" is in development at The CW for next season -- one that could unite several recurring characters from both shows in a superhero team-up series.

Brandon Routh (Ray Palmer/The Atom on "Arrow"), Victor Garber (Martin Stein, one-half of Firestorm on "The Flash"), Wentworth Miller (the villainous Leonard Snart/Captain Cold on "The Flash") and Caity Lotz (Sara Lance/Canary on "Arrow") are named as expected stars, and the potential show is reported to also feature "three major DC Comics characters who have never appeared in a TV series." According to Deadline, the project may go straight to series, possibly with a midseason debut.

The "Arrow" executive producer team of Greg Berlanti, Andrew Kreisberg and Marc Guggenheim (Berlanti and Kreisberg also both executive produce "Flash") are at the helm of the project, along with Sarah Schechter of Berlanti Productions; who is an EP with Berlanti on "Supergirl," in development at CBS.

The actors named in Deadline's report spark a few immediate questions (spoilers follow for those not up to date on this season of "Arrow"). Lotz's character, Sara Lance, was killed off at the start of the current third season of "Arrow" -- though Deadline leaves open the possibility of Lotz playing a different character, it's also important to remember the superhero comics these shows are based on, where resurrections are frequent. Additionally, Ra's al Ghul (Matt Nable) plays a major role in this season of "Arrow" -- a character known for his life-restoring Lazarus Pit.

Garber's inclusion, with no mention of Robbie Amell -- the other half of Firestorm -- also raises an eyebrow, though it's certainly still possible at this stage Amell may be involved. Miller has played a villain role in "The Flash," but it wouldn't be the first time Captain Cold has been a part of a superhero team -- he's currently part of the "Justice League" roster in the ongoing DC Comics series, written by DC Entertainment Chief Creative Officer and "The Flash" executive producer Geoff Johns.

A third show in the shared "Flash" and "Arrow" world -- usually guessed as one starring Atom or Firestorm, and this show looks to include both -- has been speculated for weeks, especially given high-profile actors like Routh, Garber and Robbie Amell playing established DC superheroes. In January at the Television Critics Association Winter Press Tour, Berlanti was asked about a potential spinoff and responded, "We're in very early talks on a very general idea that we haven't dug any deeper on yet, and aren't allowed to say anything yet."