Yeah, they exist! The Justice League are the big shots in my world.
[He may surreptitiously wipe his face and continue with his awestruck stare.]
Dude... I wish I had your world on dimensional speed dial, because I've had ideas for building manned robots, but there's always that problem of creating a power source that's got enough juice without being damaging to the environment and I don't think the Energizer bunny makes batteries in tat size.