Uglymug, Epicfighter (ブサメンガチファイター, Busamen Gachi Faitā) is a Japanese web novel series written by Ryō Hiromatsu.

It was serialized online from February 2015 to October 2022 on the user-generated novel publishing website Shōsetsuka ni Narō.

Written by Ryō Hiromatsu, Uglymug, Epicfighter was serialized as a web novel on the Shōsetsuka ni Narō website from February 19, 2015, to October 15, 2022.

[1][4] The manga's chapters were collected into six tankōbon volumes released from April 25, 2018 to February 25, 2021.

[7] A sequel manga also illustrated by Kozuki, titled Busamen Gachi Fighter SSS, began serialization in the same magazine on December 25, 2024.