Mountain Ape

Mountain Ape (山猿, Yamazaru) is the B-Class rank 3 hero.

Demonic Fan Side Story
Mountain Ape makes his first appearance shouting in a blow horn, telling Banero to surrender. The Blizzard Group surround Banero in an alley way. Banero decides to attack with a bundle of Molotov cocktails, but the Blizzard group is able to quickly subdue the criminal. The group then discuss how to split the credit. Eyelashes suggests that newcomer should receive no credit.

During the fight against Demonic Fan, Blizzard and her underlings try to defeat the mysterious being but are easily beaten by it and are subsequently rescued by Miss Blizzard's sister, Tornado who takes her away after defeating the Fan.

The Blizzard Group
Blizzard, along with Eyelashes and Mountain Ape go to Saitama's place to convince him into joining their group.

Trivia

 * His name while literally translated as Mountain Ape can also mean "country bumpkin, boor".