Eisenberg recently appeared on Late Night With Seth Meyers where the two first discussed SNL and Mark Zuckerberg.
Meyers then mentions Jesse Eisenberg is playing Lex Luthor in Batman vs. Superman to the delight of the crowd, with Meyers revealing the first look image at Eisenberg as Luthor.
Eisenberg confirms he did shave his head, and that it wasn't CGI, as well as goes on to discuss the experience.
"I actually came out of the womb with a full head of hair. I've never been able to touch my scalp. Yes it's freezing. It's really strange. You know, it's the kind of mixed thing where you feel like 'I can really damage myself.' You want to wear a helmet. It's terrifying, it's terrifying."
Meyers then pulls out a set image of Eisenberg wearing a bandana to hide his bald head from the paparazzi, with Meyers comparing the look to ET in the basket.
"You'd think there would be something more threatening than the floral arrangement," Eisenberg responded. "Everything is shrouded in secrecy, and the people are shrouded in bandannas. You know, Superman, this is Henry Cavill, he'll walk the set in baggy sweatpants."
"Batman v Superman: Dawn of Justice" has a March 25, 2016 release starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Martha Kent, Jeremy Irons as Alfred, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg with Callan Mulvey, Holly Hunter and Tao Okamoto in new character roles for the film. Justice League is to follow directed by Zack Snyder as well.