Both of The CW's hit superhero shows Arrow and The Flash are winding down with their third and first seasons, respectfully. There have already been crossover episodes between both shows, and The CW is even developing yet another spinoff, which will bring in select heroes and villains from each show. Today, The CW has revealed a fun new trailer, which doesn't offer any new footage from either show, but reveals how they all let off steam, by forming a "superhero fight club." The trailer begins with Oliver (Stephen Amell) introducing Barry (Grant Gustin) to a secret area of what appears to be the Palmer Industries building, where these characters all engage in hand-to-hand combat within a massive steel cage.

The trailer shows characters such as Black Canary (Katie Cassidy) and Arsenal (Colton Haynes) squaring off against the Dark Archer (John Barrowman), while Arrow squares off against Ra's al Ghul (Matthew Nable). When it's Barry's turn to step into the cage, he goes up against Captain Cold (Wentworth Miller) and Heat Wave (Dominic Purcell), before Reverse Flash (Tom Cavanagh) gets in on the fun. Ronnie Raymond (Robbie Amell) also makes a fiery entrance, and we even get a glimpse at the the other half of Firestorm, Dr. Martin Stein (Victor Garber), who is seen keeping score for the fights.

RELATED: Man Under Table Trailer Takes You on a Ride Through Dystopian Los Angeles [Exclusive]

What's interesting is that several of these characters are already confirmed to appear in the Arrow / Flash Spinoff, so perhaps this "superhero fight club" format could be used for that series, but we'll have to wait and see. The Flash returns with "All-Star Team Up" on Tuesday, April 14 at 8 PM ET, while Arrow comes back one day later with "Broken Arrow" on Wednesday, April 14 at 8 PM ET on The CW. Take a look at this new trailer below, and stay tuned for more on both Arrow and The Flash.