^Well, I can't speak to whether PAD was deliberately alluding to Iron Man, but I think it's rather common in SF, comics, and animation for various characters to have weapons that fire from their palms
, for instance the Goa'uld's hand device from Stargate
, so that alone doesn't prove he was. It's not even limited to Iron Man within Marvel; Doctor Doom and the Sentinels do the same (which suggests it's one of Jack Kirby's many characteristic design tropes).
Did Jack Kirby create the Sentinels? I had no idea. I thought they came along after Jack's time. Cool