Aibo/History

Aibo first appeared as an Aipom in Murkrow Row alongside 's mother, who asked him to go wake Gold up. Along with the other Pokémon living there they manage to wake Gold up, who then plays with them. Later at night they encounter a named Joey who had his bag stolen by a wild. Together, Gold and Aibo manage to defeat and capture the thieving Pokémon.

In Sneasel Sneak Attack, Aibo battled Silver's Sneasel in an attempt to get Professor Elm's back. Aibo attacked with and  blocked it with. Gold then recalled Aibo and used his billiard cue to shoot Aibo behind Sneasel, landing a direct hit.

In You Ain't Nothin' but a Houndour, Aibo battled alongside Gold's other Pokémon against the Masked Man. Aibo fought against his and lost due to Gold not knowing how to handle battling with multiple Pokémon. Despite their defeat, Aibo managed to scratch pieces of his mask off, which later proves to be instrumental in finding out his true identity.

In Gligar Glide, right after Gold goes to sleep in the woods on the outskirts of Goldenrod City, a swoops down and snatches Togebo's Egg. Aibo tries, unsuccessfully, to wake Gold and he rallies his teammates to chase after it. Aibo catches up first and tries to attack Gligar but it uses its stinger, causing Aibo to fall. Then Gligar kicks Polibo, who has just jumped out of the water. Pretending to be a tree, catches Gligar, and Exbo uses a powerful. Gligar flies away to a tree to eat the Egg, but lands on Gligar's head. Unfortunately, this makes Gligar headbutt the Egg, creating a crack in the shell. Pieces of the Egg fly off, and appears. Gligar, still hungry, attempts to eat Togepi anyways. Togepi retaliates with and ; Metronome comes out as, which scares Gligar off.

In Piloswine Whine, Aibo is used alongside the rest of Gold's team to defeat Team Rocket's horde of Pokémon.

In Tyranitar War, Aibo is sent out to battle 's, but is quickly pushed back by his attack. Aibo later battled the Masked Man again in Delibird Delivery - 2. Aibo manages to defeat his and  by using  to have them attack each other but is knocked out alongside Gold when the Masked Man attacks them with a barrage of ice.

In The Last Battle VI, Aibo participated in Gold's last battle against the Masked Man. Despite easily being defeated, Aibo manages to his boosted stats to Sudobo, giving him the speed needed to get the upper hand in the match.