Ash's Donphan (Japanese: サトシのドンファン Satoshi's Donfan) was the sixth Pokémon caught by Ash during his travels through Johto. Its voice actor in both Japanese and English is 三宅健太 Kenta Miyake. As a Phanpy, it was voiced by 林原めぐみ Megumi Hayashibara in Japanese and by Tara Jayne (Template:4Kids dub, EP230-EP273) and Lindsey Warner (Template:4Kids dub, AG133-AG145) in English. In the TPCi dub, it has been voiced by Michele Knotz and Jamie Peacock.
Ash received a Phanpy egg as a prize in the episode Extreme Pokémon! after he won a race hosted by an old couple who were breeders. It hatched in the episode Hatching a Plan!. It was shown to be a very playful Pokémon.
Phanpy was the youngest Pokémon on Ash's team, though its power made up for his lack of experience. Throughout most of Ash's travels through Johto, Phanpy was rarely used and was the baby on the team. Its only major battle was a match against Pryce's Dewgong in As Cold as Pryce. It lost the match.
Phanpy, however, played a role in Ash's battle against Macey in the Silver Conference in the episode Love, Pokémon Style!. It battled against and defeated Macey's Slugma.
Ash left Phanpy at Professor Oak's lab before traveling to Hoenn, but it returned to his party when Ash took on the Battle Frontier challenge. It had shown signs that it had grown up beyond the young Pokémon seen in Johto.
In Reversing the Charges, Phanpy battled a Team Rocket mecha and evolved into a Donphan in order to take it down. Ash also used Donphan in the match against Pike Queen Lucy and her Seviper. Donphan had become a very strong battler, but still retained its child-like behavior it had when it was a Phanpy.
Donphan returned to Professor Oak's lab when Ash left for Sinnoh.