Ben Affleck's trying to be hero in his kids' eyes — but despite playing the role of Batman in  Batman v Superman: Dawn of Justice, his 2-year-old son Samuel thinks Jimmy Fallon's "the man!"

The Gone Girl actor gave a rare insight into life within the Affleck household on Monday, Sept. 29, when he appeared on the Tonight Show with Fallon. And he explained that he's been suffering a little jealousy when it comes to how his little boy looks up to the talk show host.

"Despite the fact that I'm playing Batman now, people would say, 'Are your kids into it?' The truth is, [they're] not,” Affleck explained. “If I was doing the sequel to Frozen I would be a hero. My two older daughters could give a sh-t about Batman and they've now passed that affection onto my son. He's always like, 'Papa, can I watch Frozen?' And I'm like, 'No, dude, it's not on again!"

In a bid to avoid 24-7 showings of their favorite Disney flick, Affleck searched online for some smaller versions of the hit movie, and came across Idina Menzel's appearance with Fallon on the Tonight Show back in March when she sang Frozen's trademark song "Let It Go."

"He loves it," says the dad-of-three. "And he wants me to sing along. I can't tell my son that I can't sing. So I just [mumble] and he's like, 'No Papa, do it like the man!' I was like, 'First of all, I'm your father, okay? Jimmy Fallon's not the man — I'm the man!"

Affleck, who has three kids with wife Jennifer Garner (Samuel and two daughters Violet, 8, and Seraphina, 5), also revealed he's starting to turn into the stereotypical overly competitive sports dad, and there's nothing he can do about it!

"My oldest daughter started playing basketball and I'm already that guy," the hunky actor admitted. "You remember in Parenthood, Ron Howard's brother was yelling at the kid from the sideline? That's me. I'm like, 'Bend your knees!' I don't even know if you should bend your knees, I’m terrible at basketball!"

Click on the link above and see what he had to say about challenging other parents to a fight!