
Warning! This article contains major spoilers for Agatha All Along episode 5. If you've not caught up yet, and don't want to know anything that happens, turn back now!
Agatha All Along dropped a bombshell on viewers in episode 5, when the Disney Plus series confirmed that Joe Locke's Teen is Scarlet Witch's son Billy. Now, in the run-up to episode 6, Marvel has revealed that he goes by 'Billy Maximoff', and the choice of surname has peaked fans' curiosity.