Nathan's favorite toy from Christmas is his Superman action figure. He also insists on wearing his Superman jammies whenever he sees them, whether it's time for bed or not. He doesn't call him by name, though. All superheroes are called "B", but this one goes "Whish!" when he flies.
Above: the age old question -- "Marvel or DC?" Nathan seems to prefer DC characters so far. He will be having some discussions in the future with his old man about this!