Dosu-Roku was originally a petty thug who continuously harassed Akira Fudo and Miki Makimura, often making sexual advances towards Miki and being angered when she turned him down. However after Akira had gained Amon's powers Dosu-Roku became good friends with Akira.
- Dosu-Roku (Manga): A gang thug who eventually became one of the first in the Devilman Corps, however it wasn't until much later he gained Devilman powers.
- Dosu-Roku (OVA): A member of Masa's gang, he seemed to have fun taunting the weak willed Akira, but didn't want to see him get hurt by his fellow gang members.
- Dosu-Roku (Grimoire): A minor character who planned to rape Miki with Go, but is quickly killed by the demoness Aleda.
- Dosu-Roku (Gekiman):
- Dosu-Roku (Devilman vs Hades):
- Dosu-Roku (AMON): A major protagonist and the main character for the first volume.
- Dosu-Roku (Devilman vs. 009): A thug that temporailiy gets in the way of Akira and Miki before a swift defeat.