Ultron (person) by Quizro - Everything2.com

Other fun Ultron facts:

Ultron-1 first appeared in Avengers #54.
Ultron-5 programmed the Vision.
Ultron-6 was the first adamantium Ultron. He is also known (in a very Japanese turn of phrase) as "Ultimate Ultron".
At one point he operated under the alias Crimson Cowl, and as such led the Masters of Evil.
His Achilles heel is the magical power wielded by the Scarlet Witch.
In an effort to build himself a companion he attempted to upload the mind of Dr. Pym's ex-wife Janet Van Dyne into a robot body he dubbed Jocasta. (Get it? Because she was married to his father? Who says comics aren't intellectual?) He didn't count on the Wasp's morality carrying over as well, though -- Jocasta turned against her creator, and though she still loves the big evil lug, she now fights on the side of the Avengers.

Props to http://www.geocities.com/marvel_villains/

Jocasta	Dr. Doom	vision	Scarlet Witch
Crimson and Clover	Klaw	Bokonon	Green Arrow firing arrows at a cosmic shield
Michelob Ultra	Iteration X	Secret Wars	The Amazing Spider-Man Riot at Robotworld
Of strange tales and Valiant universes	Machine Man	indestructible shield	Wasp
techno	Masters of Evil	Supox	Utwig
Spectreman	Comics titles and characters	Wonder Man	Ant Man

Ultron (person)