Cartoon Network’s  new animated series, Justice League Action, premieres in the U.S. tomorrow. But there’s a new clip from the first episode, Shazam Slam, if you’re looking to indulge a day early.

The new clip features DC regulars Superman, Wonder Woman, and Batman, but we also get a fresh look at John Constantine, Green Arrow, Plastic Man, and Swamp Thing, all of whom gather in the House of Mystery.

You can check out the clip below:

After the premiere tomorrow, Justice League Action will air on Cartoon Network every Saturday, beginning on Christmas Eve. The new show features the voice talents of Kevin Conroy as Batman, Mark Hamill as The Joker, Patton Oswalt as Space Cabby, James Woods as Lex Luthor, Rachel Kimsey as Wonder Woman, Jason Lewis as Superman, and Ken Jeong as Toyman, to name a few.

What do you think of the new clip? Which DC character are you most looking forward to seeing in the new series?