|This article is about a/an Orphnoch in Kamen Rider 555.|
|Season:||Kamen Rider 555|
Aonuma (青沼) is one of the Ryusei School students. At one point he looks harmless but his true nature is revealed to be that of an Orphnoch.
Aonuma is the Sloth Orphnoch (スロースオルフェノク, Surōsu Orufenoku). On the Ryusei School reunion, he along with Kitazaki (Dragon Orphenoch) had involved in the slaughter of his classmates. He was killed by Takumi Inui in Wolf Orphnoch form with a punch.