Ultron

Ultron (voiced by James Spader, Jim Meskimen, Tom Kane, Fred Tatasciore, William Salyers, and Michael Dobson) is a fictional supervillain from Marvel Comics. He is sentient, malevolent robot created by Hank Pym (Tony Stark in the MCU and Avengers Assemble) meant for noble purposes, but after witnessing humanity's acts of violence, resolved to eradicate them from existence, leading him to become one of the Avengers' greatest enemies. He is the main antagonist in the 2015 film Avengers: Age of Ultron, as well as a recurring antagonist in Avengers: Earth's Mightiest Heroes and Avengers Assemble.