Debo Viruson (デーボ・ウイルスン Dēbo Uirusun) is a Debo Monster of the group, and was considered one of the dinosaurs greatest enemies in ancient time. He is themed after a virus with some devil accents to his body and armed with the ViruSpear (ウイルスピア Uirusupia). He is able to infect others to do his bidding. At the end of Brave 5, it's found out that he is the one controlling Zyudenryu Ankydon, as well as the one responsible for driving Debo Batissier into insanity.