Atsushi Maruyama (丸山 敦, Maruyama Atsushi; born on June 14, 1976) is a Japanese professional wrestler, currently signed to All Japan Pro Wrestling (AJPW). He previously worked for Osaka Pro Wrestling under the ring name Tigers Mask (タイガースマスク, Taigāsu Masuku). His ring name and original wrestling attire were inspired by the Hanshin Tigers baseball team.

On February 8, 2014, Tigers Mask announced his resignation from Osaka Pro, effective April 20, after which he began working in the Tokyo area under a new persona. On April 22, 2014, Maruyama made his first appearance unmasked, announcing that in the future he would be working under his real name. Maruyama also adopted two new ring names, when he started to work for Pro Wrestling Heat Up as Akatora (アカトラ, Akatora) and Kaientai Dojo as Teppei (stylized in all capital letters).

In January 2018, Maruyama signed with All Japan Pro Wrestling (AJPW) and adopted the name Izanagi (イザナギ, Izanagi) in 2020.