The Stinkbug Orphnoch is an Orphnoch and an antagonist in Kamen Rider 555.
Kamen Rider 555
He fought Yuji Kiba and Faiz but was beaten back by them. He later went after Mari and Keitaro and attempted to kill him, only to be killed when the Horse Orphnoch form ran hum through with his sword.
Kamen Rider Decade: All Riders vs. Dai-Shocker
The Stinkbug Orphnoch appears as a member of the Dai-Shocker army in the World of Decade. The army fought against a gathering of the 25 Kamen Riders, who came together to defend the A.R. Worlds from Dai-Shocker's multiversal invasion.