Ultron

Ultron is an Iconic Supervillian appearing in Marvel Online Universe. He is a self-aware, self-teaching and highly intelligent artificial programmed robot (sometimes referred to as a "synthezoid") created by Hank Pym who developed a grudge against Pym and the human race, and is in many ways a dark reflection of Pym. Ultron's physical body is made of a very durable alloy, and he has manifested various superpowers, including superhuman strength, speed, and agility, flight, and energy projection. Ultron usually operates solitary or accompanied by his legions of Ultron Sentries, but has also been part of several supervillain teams. Ultron is notable for being the first character in the Marvel Universe to wield the metal alloy adamantium.

Ultron's ultimate goal to destroy humanity has brought him into conflict with the Avengers, who always managed to thwart and destroy him, but he returned to haunt them time and time again. For this reason, he is often regarded as the Avengers' calculating archenemy.