Wanda Maximoff's sons, Billy and Tommy, make their official return alongside their mother Scarlet Witch, sporting streamlined versions of their classic comic book costumes. Scarlet Witch is one of the most powerful heroes in Avengers history, so it only stands to reason that her children are similarly powerful in their own area of superpower expertise. Billy Kaplan a.k.a. Wiccan is a skilled sorcerer, and Tommy Shepherd is one of Marvel's rare speedsters.