In Mounting an Electrifying Charge!, Yansu entered the Charjabug race as a member of the Red Comet team with his brothers and Horacio's Shiny Charjabug. His role as his team's support runner was to run alongside Charjabug during the race and help it overcome obstacles. Like Dana, he noticed how Charjabug was running out of stamina due to it not given much time to rest, but Horacio yelled at them to keep going on despite this. Eventually, when Charjabug got stuck at an icy slope, it was surpassed by Sophocles's own Charjabug, who then proceeded to win the entire race, much to the dismay of the Red Comet team.
In Evolving Research!, Yansu and his brothers traveled to Vast Poni Canyon so Horacio could evolve his Charjabug. They encountered Ash, Kiawe, and Sophocles, who were planning to evolve Sophocles's own Charjabug. Horacio accepted Sophocles's challenge to see who could evolve their Charjabug first, under the condition that they do so unassisted. As a result, Yansu waited outside the Canyon alongside Dana, Ash, Kiawe, and Hapu while Horacio and Sophocles tried to get the "Bug Stone" that was said to make Charjabug evolve. Yansu later watched as Sophocles returned victorious with his Vikavolt.
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|Horacio's Charjabug 10px|
|Debut||Mounting an Electrifying Charge!|
Yansu has competed in the following Pokémon competitions:
- In the Japanese version, he ends his sentences with "-de yansu", a reference to his name.
|80px||This article is part of Project Anime, a Bulbapedia project that covers all aspects of the Pokémon anime.|