The Snail Orphnoch is an antagonist in episodes nine and ten of Kamen Rider 555.
The Snail Orphnoch was originally a burglar who broke into people's houses and ate their food, not taking anything else. However, the Snail Orphnoch was later told by Smart Lady that Kamen Rider Faiz, whose gear was being used by Naoya Kaido, would kill any Orphnochs who refused to go after humans.
Not wanting to die, the Snail Orphnoch killed a human and quickly discovered he enjoyed killing people. After going on a killing spree, the Snail Orphnoch was killed by Takumi Inui after he got the Faiz Gear back and transformed into Kamen Rider Faiz to defeat him.