I love all DC and MARVEL superheroes except for Superman he's too...
nice?
un-batman like?

I'm not sure.

But my favourite from DC is Robin (Dick Grayson) and from MARVEL is Spider-Man (Peter Parker)

By the way: "Ironman sucks!"

^ Guess where I quoted that

I hate the Lego Batman movie, but that doesn't mean it's not hilarious.