I think it's just Quicksilver from a different (Fox/X-Men) Multiverse, pulled into this world. Though I could be wrong. Have been before.
Case in point, I was DEFINITELY wrong about Hayward. I thought people were going WAY too hard on him from the last episode. This one basically put a "He's an asshole" sign directly over his head. Eager for some kind of alias/nickname they can call Wanda (possibly to dehumanize her?). He's claiming Wanda's going against Vision's living will of not wanting to be turned into a weapon, but that sure as hell seems like what SWORD was doing with his body, which they had in pieces, when Wanda showed up and took it. AND trying to shoot her with a missile he had installed in that drone?