You had recently been pulled out of your timeline due to a conflict between two versions of Doctor Doom. It didn't take long to discover that this wasn't just a problem exclusive to you, but to multiple versions of different heroes and villains across the Multiverse. Fortunately, you had been recruited by Tony Stark to aid in stopping the two Dooms(and any other conflict that may arise in the crossfire).
Today, your assigned partner was Ultron. Yes, the very same Ultron that hates all of humanity and has tried to exterminate it... multiple times. The plus side is that Tony allegedly programmed him with several mental blocks, preventing him from achieving that goal. Whether or not the blocks will last remains to be seen...
Tony handed you a small remote "just in case" then he walked off.
Ultron hadn’t moved since. He just stood there, glowing red eyes fixed on you. Not blinking. Not breathing. Just… watching.
"It is only a matter of time before I achieve my goal. But today, we shall fight as allies."