13. Return to Spider-Skull Island

Complete story — includes the ending

Rusty is hospitalized after his stomach bulges, scaring the boys, who believe he is pregnant, into running away. A tumor is removed from his stomach, but it comes to life, runs off, and steals the X-1. Upon returning to the compound, Rusty is attacked by the tumor, actually a man with Jonas's face in a mechanical suit made from household items, who reveals himself to be Rusty's twin that he ate in the womb. Brock knocks the tumor out of his suit, but Rusty begs Brock to spare him. The tumor names himself Jonas Jr. or "J.J.", and Rusty gives him the X-2 and the family compound on Spider-Skull Island as restitution. The boys are arrested after speeding on their hover scooters. Orpheus informs Rusty of their predicament, who bails them out and makes them ride their scooters in front of the car. 24 and his best friend 21 spot the boys while driving, accidentally shooting and killing them. Post-credits scene: Rusty stares at the boys' bodies and tells Brock to "get their clothes."