I remember this two way back in the comics and the old Iron Man cartoons. They sure give IM a hell of a time.

The Mandarin and his ten rings always find some weakness against IM but IM gets the better hand anyway that's what Heroes do at least in comics or film.

MODOK I don't remember him in the cartoons just the comics a mutant genius always finding some way to destroy IM. I haven't check his updated versions I'm just recalling from the old comics.

I hope to see this two in future sequels of Iron Man and I heard there will be three as in Trilogy.