He could do a No Way Home to about a third of the Batman Rogue's Gallery, too.

Peter, with a clipboard in the Bat Cave giving a breakdown of what all happened while Bruce was away: "Let's see... Pam, Vic, and I stabilized the DNA of Clayface and Man-Bat, and were able to at least partially walk back Killer Croc's mutation. We also tried to fix Penguin - did you realize he's just A GUY? Like, no superpowers or anything."

Bruce: "Pam and Vic?"

Peter: "Oh, uh... Poison Ivy and Mr. Freeze, sorry. They helped in return for me looking at both their research and helping them out. We've almost cracked a way to revive Nora AND undo Victor's condition. And... uh... Bruce... I looked at Pam's numbers, and she is absolutely right about all the global warming stuff, you need to really take that more seriously."

Bruce: (audible groan)

Peter: "Look, I know you can't punch global warming, but you can switch this arm of Wayne Corp over to sustainable energy, it would help."