The Cherub Demon as the name suggests somewhat resembles a cherub, just a deformed one at that. He had bright pink skin and messy blue hair, a ugly and deformed face and small whit bird like wings.
The Cherub Demon could presumably fly with his wings.
As Devilman searched space for the demon Dremoon, Zennon called fourth a large group of demons and commanded them to go out and attack the human world. The Cherub Demon was among the group that attacked Japan.