Rems, a young man with shoulder-length white hair and a delicate, androgynous features, is frequently misidentified as Crevanille’s girlfriend. His weapon, a ring that transforms into a bow, becomes pivotal in combat. Discovered unconscious in a forest by Crevanille and Regina, he is brought into the Alten Schwartz mercenary group and adopted by their leader, Dixon, forging a step-sibling bond with the pair. Though his origins remain shrouded in secrecy, Rems radiates optimism and kindness, prioritizing others’ well-being over his own burdens.

When an angelic assault decimates the brigade, claiming Dixon, Regina, and fellow members, Rems survives to bury the dead and nurse Crevanille back to health. United by grief, the two pledge to unravel the mysteries of the angels and Crevanille’s destiny. A subsequent expedition into ancient ruins turns dire as Crevanille suffers critical injuries, leaving Rems haunted by the carnage.

Seeking strength, Rems hones his magical prowess at Fort Leinfaltz, unlocking the ability to perceive familiars. He joins Crevanille and Vallery on missions, including a poignant visit to Dixon’s widow in Ribocca. After an angel reduces the town to ruins, Rems vows vengeance, his resolve steeling further. His bond with Dixon’s wife deepens into a familial connection, reflecting the paternal kinship he shared with Dixon.

In the OVA *Growlanser IV: Wayfarer of the Time*, Rems supports diplomatic efforts amid clashing nations, though his specific role remains undetailed. Spin-offs such as *Growlanser IV Return* offer no further elaboration on his backstory or growth.