Ben 10,000's History
Ben 10
Ben 10,000
Ben 10,000 first appears in his self-titled episode, when his cousin brought his and her younger selves to help them fight Animo and a resurrected Vilgax. As the younger Gwen pointed out, Gwendolyn brought the younger Ben so that Ben 10,000 can get a major attitude adjustment. This interaction with his younger self caused him to lighten up somewhat, renaming his aliens.
In Ken 10, Ben 10,000 defeats Vulkanus just in time to attend his son Ken's 10th birthday and gives him a replica Omnitrix that behaves much like the first one he wore in his youth.
The aliens he gave Ken were Spitter, Buzzshock, Shellhead, Ditto, Wildvine, Stinkfly, Toepick, XLR8, Sandbox and Snakepit. However, Toepick was later exchanged for Grey Matter because Kenny said that Toepick grosses him out.
Ben 10,000 is able to defeat an escaped Kevin 11,000 with help from Ken (who was able to unlock the Master Control using Grey Matter) as well as Kevin's son Devlin, who decides to live with the Tennysons following their victory.
Ultimate Alien
Ben 10,000 was mentioned by the other Ben 10,000 in Ben 10,000 Returns when Professor Paradox mentioned that they traveled into crosstime.
Omniverse
In Ben Again, Ben 10,000 came to Ben's time zone looking for Professor Paradox, asking the present Ben for Paradox's location. He also informed his younger counterpart that "the Chronosapiens had gone rogue and Maltruant's temporal beasts are on a cross-dimensional rampage", he also states "this time war is getting out of hand."
In And Then There Were None, Ben 10,000 arrives along with Gwen 10 and Ben 23 to assist in the battle against the evil Bens, courtesy of Professor Paradox. Ben displays his first use of the Biomnitrix's fusion abilities to transform into Fourmungousaur. He fought Mad Ben as Rath and Benzarro as Snare-oh until the Chronosapien Time Bomb went off. Ben 10,000 tried to stop the bomb by using Atomic-X but was apparently erased from existence, just like the other Bens.
In And Then There Was Ben, Ben 10,000 was visited by Professor Paradox and the other alternate Bens to be recruited for the ultimate battle against Vilgax and later on he was brought back into existence by No Watch Ben as Clockwork. Ben 10,000 and his fellow Bens battled Vilgax together and won. He was then sent back to his own timeline after escorting the good Omnitrix wielders to their timelines.
In Fight at the Museum, Ben 10,000 hugged his beloved wife after she received her orb back.
In Let's Do the Time War Again Professor Paradox brought Ben 10,000 back in time in order to contain the rampage of a Time Beast. Using Crashocker, he fought against Exo-Skull and Subdora and later on used Uprigg to rebuild the destroyed Proto-TRUK and Tenn-Speed into Time Cycles. Returning to the past once more after his past self destroys Bellwood, again, he fights Eon's Servants as Big Chuck. Later on, once the crisis is resolved, Paradox takes Ben 10,000 back in time to close the time loop that they created before sending him back to his own time.
In The End of an Era, he and Kai tried to stop Dr. Animo from using the Chronoporter to escape to the past, but fail. They are then surprised when Spanner brings Animo back seconds later. Ben greets him warmly, remarking that he hasn't seen him in years. Ben calls for Ken, who comes into the room, carrying the Omnitrix (which Kai confiscates, as he is grounded), and is confused by Spanner suddenly vanishing.
The family teleports to the Plumber Headquarters to attend Max's retirement party, bringing Animo to be imprisoned. In the middle of the party, the power suddenly goes out due to a solar flare. Gwendolyn senses Maltruant's presence, and she, Ben and Kai go to confront him. After briefly being unable to use the Biomnitrix due to the solar flares, Ben battles Maltruant as Atomic-X. Spanner then appears on the scene, and Atomic-X defends him from a blast from Maltruant, changing back to Ben. Spanner calls Ben "Dad", revealing that he is Ken, having been given his suit by Professor Paradox. Ben tells Ken to go back in time and get help. Shortly after, he, Kai and Gwendolyn are frozen in time by Maltruant. When Ken returns with the present day Ben and Rook, Ken unleashes some Techadon Robots, one of whom saves Ben 10,000 after he is thrown into space by Maltruant.
In A New Dawn, Ben 10,000, no longer frozen in time, is given the wounded Ken to take care of by his younger self.
