The Lion Orphnoch is a Riotrooper officer and a supporting antagonist in the Kamen Rider 555 film Kamen Rider 555: Paradise Lost. He was among the Riotroopers sent by Smart Brain to attack the human camp Paradise.
He was voiced by Tsuyoshi Koyama.
In the past, the Lion Orphnoch was among the Riotroopers who attacked Kamen Rider Faiz, chained him up and dragged him away as he was defending Mari.
The Lion Orphnoch was later part of the Riotrooper force sent by Smart Brain to exterminate every last human in the refugee camp Paradise. During the raid, the Lion Orphnoch was knocked off his bike when Mari fired a bazooka at him and had his transformation canceled when he hit the ground. Assuming his Orphnoch form, the Lion Orphnoch got onto the bike of another Riotrooper and directed him to go after the bus Mari was on.
As they got closer to the bus, the Lion Orphnoch leaped onto it and attempted to crawl in through a window, grabbing Keitaro and causing them both to tumble off the bus.
The Lion Orphnoch later took part in the Riotroopers' second raid on the human encampment. Eyeing Mari, the Lion Orphnoch attempts to go after her again However, Keitaro gains the power to use the Kaixa Belt after drinking the Henshin One Shot, and transforms Kamen Rider Kaixa to defend Mari. Outmatched by the Kaixa Belt, the Lion Orphnoch was swiftly destroyed by Keitaro as Kaixa.