| The subject of this article has no official English name.|
The name currently in use is a fan romanization of the Japanese name.
Chairtarō makes his debut in Wake Up—You're Snorlax!. There, he hosted a Bicycle race that Red participated in. The prize for the competition was 1,000,000, which Red managed to obtain, only to be forced to spend in order to feed his newly-captured Snor.
In Breath of the Dragonair Part 1, Chairtarō is seen hosting the Vermilion Beach Monster-Wave-Riding Contest that Yellow participated in. The prize for the contest was a Dragonair capable of crossing over the seas, but it was stolen by Lance.
In the Hoenn region, Chairtarō serves as the announcer for Pokémon Contests. In Mind-Boggling with Medicham, he is seen hosting a Normal Rank Contest in Verdanturf Town. In I More Than Like You, Luvdisc I, he is seen hosting a Super Rank Contest at Fallarbor Town. In Always Keep Whiscash on You for Emergencies, despite the area being flooded due to awakening of Kyogre, Chairtarō is seen hosting a Hyper Rank Contest in Slateport City. When Chairtarō falls into the water, a passerby Swimmer saves the announcer and chastises him for hosting a Contest despite the danger.
In The Announcement and the Prize, Chairtarō appears as an announcer for a tournament taking place during a festival held in Iki Town. When Sun battled against Guzma, Chairtarō was harassed by Grunt A, who claimed that Chairtarō was biased against Guzma.