Osirus is a dog-motif Phantom Beast Warrior who holds the spirit of the Cerberus.
Camille approached him, Sonimax, and Lepus in hopes of them giving her some of their Rinzin power, but they turned her down. Scorch and Snapper dispatch him, Sonimax, and Lepus to eliminate Camille. They overwhelmed her until Jarrod/Dai Shi arrived. He and Sonimax were destroyed in combat by Jarrod.