Editing Rob (The Amazing World of Gumball) (section)

==== Season 6 ====
Rob returns in "The Spinoffs," where he holds Timmy (AKA the Internet) hostage in order to hijack the show's broadcast, showing several spin-offs ideas with the other characters. This proves to be futile, and Rob gives up by the end of the episode.

Rob reappeared in "The Future," where he kidnaps Banana Joe’s mom, Banana Barbara, to understand her prophetic paintings, which have gone from depicting tangible events to pictures of only static. One week later, Banana Joe requests Gumball and Darwin's help in finding his mother after she went missing. Meanwhile, at an abandoned warehouse, Rob orders Barbara to paint the future, but all she can paint is images of static. This enrages Rob, who claims "that can't just be the end." Barbara eventually paints a portal that teleports Gumball, Darwin, and Banana Joe to the warehouse. They confront Rob, who uses Barbara’s paintings to defend his quarter, painting in hazardous things like a crack in the floor and himself a bazooka. Gumball tackles Rob, and threatens to paint him out of existence. Rob claims that they "don't get it" and argues that "this is more important than you." Despite this, the trio eventually use white paint on a painting of Rob to erase Rob from existence, killing him. Gumball feels remorse, and requests that Barbara paint Rob back into existence. Banana Barbers repaints Rob into existence, giving him a pigtail as per Gumball's request, who wishes to see him in the future. However, Barbara responds that there is no future, contextualized next to the painting of Rob which depicts him falling into the Void.

In "The Revolt," Rob makes a cameo where he is in an Elmore Stream-It video, uploaded during his "Dr. Wrecker" phase.

In "The Inquisition," a live-action human named Superintendent Evil arrives at Elmore Jr. High to stamp out any cartoonish conduct. This involves having the kids act realistically, threatening punitive measures if they do not oblige. Eventually, it is revealed that Superintendent Evil is using technology to transform the characters into humans. He manages to transform almost all the kids into humans, except for Gumball and Darwin, who manage to turn all the kids back to their normal forms by reminding them of their cartoon identities. After getting confronted, Superintendent Evil's mask is pulled off, revealing him to have been Rob in a disguise the whole time. Rob tries to explain his actions, and claims that the transformation was designed to save their lives, but Tina knocks him out. Rob wakes up at the school at midnight, alone, and rants about how he was stopped earlier. He claims that transformation was the only chance they had to escape to "the other place" before something happened to this world. However, he cuts himself off upon hearing crumbling sounds, and the floor breaks apart beneath him, revealing the Void. He falls in and barely holds onto the edge of the floor, looking down at the abyss before remarking with horror that "it's started." He loses his grip and falls into the abyss, screaming, the Void continuing to destroy the world around him. The episode freeze frames on Rob's descent into the Void, and plays an eerie and incomplete rendition of the end credits music before the episode ends. The last shot of the episode is the same image depicted in Banana Barbara's painting from the end of "The Future." It is unknown if Rob survived or not.