Rhinomon is an Armor Digimon.
In Fusion, they served as members of the Bagra Army, they first appeared in Mikey's dream, and then when Mikey & co arrived to the Digital World, and finally in the Bagramon's invasion to the human world.
In Adventure:, a Rhinomon was seen in a flashback in Episode 45, as one of the Digimon racing on the racing field.