Try to think of something extraordinary that fits your real abilities in the sheets.
Mine probably would be absolute orgasm (self-)control while doing anal. It’s sometimes not easy for me to hold back my orgasm doing PIV, especially while using a condom or after a long dry spell. But with anal sex I could go for hours with full enthusiasm without blowing my load unless I want to. And if I want to It’s always there in a range of a few seconds for me to go for.
Well since you mentioned super heros why not mention a comic book https://en.m.wikipedia.org/wiki/Sex_Criminals In the comic there are people that can temporarily stop time when they orgasm and they use this power to rob a bank.
While talking super heros why not mention the movie https://en.m.wikipedia.org/wiki/Orgazmo