We always knew he was, but he went to great lengths to get some new Nasty Pig underwear…in every colour they have…Pink, Blue and Yellow and multiples of some! Now that’s dedication. 
These briefs are made of 93% Modal and 7% Spandex and are super comfy. They feel amazing on (and off on the floor I’m sure as well) and really light and easy to wear. They are almost like you’re not wearing anything at all. 
He’s a huge fan of the colours, with the Pink being his favourite. They are very super hero friendly, and have a great pattern on them. They feel great under jeans, or any other such human clothing you have to wear to disguise your superhero identity. 
We here at Undies101 were lucky enough to be able to snap a few pics of him in all of them while he was in NYC briefly, before he flew off to parts unknown.