Appearance and Personality
Gromm has four red eyes, with a skeleton-looking face, and a massive body size.
Gromm went along with the other servants of Karaka to the 44th Floor. When they arrived he was told to destroy the warship that was holding Karaka captive, but his arm was destroyed by Ha Cheonhee from a distance. She then threatened him about ripping off his head if he tried again.
Powers and Abilities
Gromm was about to destroy one of Zahard's warship, indicating he should be as strong as the other servants of Karaka.