• "Legends of Tomorrow" may feature more heroes.

"Legends of Tomorrow" may feature more heroes. (Photo : Twitter/@CWTVFlash)

"Legends of Tomorrow" is hitting the screen in 2016 and "Arrow" and "The Flash" universes introducing a number of characters. Among the characters expected to appear in "Legends of Tomorrow" are Jim Gordon, Robert Queen, Zatanna and Aquaman.

Jim Gordon from "Gotham" is one of the characters that should appear in "Legends of Tomorrow," according to We Got This Covered. The publication said that while "Gotham" put emphasis on Batman's early years, it would be amusing for the viewers to see Gordon and Harvey Bullock share the screen with the protagonists and big baddies of "Legends of Tomorrow."

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"Legends of Tomorrow" could also enter Robert Queen as vigor for the Oliver Queen's Green Arrow. Robert became The Arrow on Earth-2 in "The Flash," so it would be interesting to see a vigor for the iconic vigilant in the upcoming series, as per We Got This Covered. To add, this could be a father-son reunion in the series should this happen.

DC's universe in the small screen made an attempt to include Constantine in the Arrowverse, thus, raising the elements of magic with a pinch. Known as a powerful sorceress who can cast spells by speaking backwards, Zatanna could also be added in "Legends of Tomorrow" to spice up the science-centered team and boost the impact of Sara Lance, Hawkman, and Hawkgirl.  

While fans have seen The Flash in the series, they could also see Aquaman in the television. In "The Flash" series, Jay Garrick from Earth-2 had revealed that he would have gone to visit Atlantis, which hints a possible appearance of the aquatic member of the Justice league.

"Arrow" and "The Flash" have hinted the potential appearance of Hal Jordan in DC's small screen with his iconic jacket. Including Green Lantern in "Legends of Tomorrow" may stand as Warner Bros.' way to set up his way in the DC Cinematic Universe.

Eobard Thawne also has a chance to be in "Legends of Tomorrow." According to We Got This Covered, while he was not a hero, Thawne as the Reverse Flash could join villains Captain Cold and Heat Wave. The publication mentioned that Thawne's version of Reverse Flash sharing the scene with Dr. Martin Stein would be thrilling.  

In a "Legends of Tomorrow" teaser (via TV Line), Malcolm warned Barry about Vandal Savage. The publication also mentioned that Savage bumped into Oliver Queen and Felicity Smoak as he looked for Kendra. Hawkman and also Hawkgirl were featured, with the latter talking to the skies.

With the number of heroes and villains in "Legends of Tomorrow," the show is going to be action-packed.

"Legends of Tomorrow" is slated to premiere in 2016.

Watch the "The Flash" promo trailer here: