Keroguchi (けろぐち) is a Super Smash Bros. Ultimate Wii Fit Trainer player from Japan. He is regarded as one of if not the best Wii Fit Trainer player in Japan. He has defeated players such as Eim, Kuroitsu, Mao, Gackt, Brood, DoubleA, huto, Rotsuku, Shogun, and takera.
After placing 33rd at EVO Japan 2020, he has become part of the five-way tie for the highest placement of an Ultimate Wii Fit Trainer main at an S tier tournament, along with varun, Evy, CPU, and John Numbers.