The late-night comedian presented a star-studded comedy skit set in a high school lunchroom with himself as Batman, lamenting how dark and depressing it can be at the DC table. Everyone is just so lame, and Cyborg keeps malfunctioning. All he wants is to have a little joy in his life, and nobody is having as much fun as the "cool kids" at the Marvel table.
There were plenty of fun and geeky burns flying back and forth, but none so fierce as when Andy Richter showed up as Robin and had epic put-downs for every single member of the Avengers team. But even he wasn't the biggest surprise, as another character crossed over from yet another comic book universe.
Check out all the crossover excitement in the video above to see who else can lift Thor's hammer (hint: it's not Batman).