9. The Diving Bell vs. The Butter-Glider

Complete story — includes the ending

Rusty collapses during an arching and goes catatonic. With the X-3 submarine missing, the boys go with Brock in a S.P.H.I.N.X. submarine that Billy shrinks and injects into Rusty's bloodstream. They discover that the source of Rusty's distress is a blockage caused by the X-3, which has the skeletons of Hank and Dean's clones inside of it, though the boys misunderstand the situation. The Monarch buys a glider that he becomes obsessed with, leaving both his henchmen and Dr. Mrs. The Monarch annoyed. She asks 21 to snap him out of it by having the henchmen go rogue and try to kill Rusty. The Monarch goes to arch Rusty himself when he learns of this, tying him to the glider and dragging him through the sky, but Hatred saves him by enlarging Rusty and causing the glider to crash. Post-credits scene: With Rusty back to normal size but still unconscious, Billy locates Brock and the boys in Rusty's prostate and tasks Pete with getting them out manually.