Kamen Joshi (仮面女子, Mask Girls) is a Japanese female idol group consisting of four teams.

The music of Kamen Joshi is usually rock or heavy metal, often with rap verses.

All members wear Jason Voorhees-style hockey masks and wield a selection of prop weapons ranging from chainsaws to giant scissors.

10 member Nanaka Kawamura (川村虹花) (ja) was also active as an atomweight Mixed Martial Arts fighter during her time in the group, displayed the Kamen Joshi logo on her shorts during fights.

Steam Girls was formed as Alice Jūban's official sister and rival group.

The members wear gas masks and leg warmers in a style combining elements from steampunk and cybergoth fashion.

Igari talking about her condition and presenting visual upgrades to her wheelchair are a regular part of Kamen Joshi solo concerts.

Their masks resemble fantasy-themed plate armour helmets with visors, and they carry prop rifles called "Armor Gun".

Because of this, the group is sometimes referred to as Irish Idols (アイリッシュアイドル, airisshu aidoru) in promotional texts,[5] but all members are Japanese.

The name likely refers to Slimes, the first monsters a player encounters in games like Dragon Quest and some versions of Final Fantasy and The Legend of Zelda.

During the 2016 United States presidential election campaigning period, Kamen Joshi released a video voicing their support of Donald Trump, with a disclaimer stating that the video is only "entertainment", and "does not represent the political thoughts and beliefs of the members and their affiliated offices.