Gilbert's legal uncle, later revealed to be his biological father. Auguste is an adopted son of the house of Cocteau. He was raped by his elder step-brother in his own youth and has abused Gilbert from a young age.

Serge Battour is the son of a French viscount and a Romani prostitute, and despite his kind nature and academic talent, is shunned by his family and his peers due to the color of his skin. He begins to attend Lacombrade Academy, his father's alma mater, in the hopes that there he will find a place to belong. 
Gilbert Cocteau is, like Serge, the orphaned son of a wealthy family, and is infamous at Lacombrade for his beautiful and delicate appearance, lack of dedication to schoolwork, and habit of prostituting himself to other students. He has no intention to connect with any of his classmates, instead devoting himself to his uncle Auguste. 
Due to a shortage of living space, Serge and Gilbert become roommates even though Gilbert's antisocial nature has in the past made it impossible for him to room with anybody. Serge, being sociable and idealistic, is determined to be friends with Gilbert; Gilbert is only interested in either being able to manipulate Serge or push him away entirely. To the surprise of both of the boys, however, the two eventually form a deep, albeit generally dismal, bond that leads to a romantic connection.

1887, at a remote, elite boarding school in France: Serge Battour returns after his graduation, and remembers the days of his youth... 
1880, at the same school: Son of a viscount and a Roma prostitute (both deceased), Serge is intelligent, sweet, talented, and alienated by his family due to his heritage. Upon being sent to his new school, he rooms with Gilbert Cocteau, a gorgeous loner of a boy who sells his body for reasons unknown. Serge's attempts to reach out to Gilbert fail spectacularly, and yet there is something in both of them that attracts them to each other.

**Non-anime roles:** 
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- Amon in "Double Dragon" (Neo-Geo) (VG)
- Dhaos in "Tales of Phantasia" (VG)
- Diva in "Farland Story: Yottsu no Fuuin" (VG, Japanese)
- Dr. Baldhead in "Guilty Gear" (VG)
- Gray Fox in "Metal Gear Solid" (VG, Japanese)
- Hyo Imawano in "Rival Schools" (VG, Japanese)
- Jareth, the Goblin King in "Labyrinth" (Jim Henson movie, Japanese)
- Jimmy Lee in "Double Dragon" (Neo-Geo) (VG)
- Larva in "Kyuuketsuhime Miyu Seiyou Shinma-hen" (drama CD, Japanese)
- Luke Skywalker in "Star Wars" (original trilogy, Japanese)
- Memphis in "Magic School Lunar!" (VG, Japanese)
- Mr. X in "Metal Gear Solid 2: Sons of Liberty" (VG, Japanese)
- Ootori Noboru in "La Vie En Rose" (Drama CD, Japanese)
- Ostracon in "Emerald Dragon" (Drama CD, Japanese)
- Rei in "Hokuto no Ken: Seikimatsu kyûseishu densetsu" (VG)
- Zato-One in "Guilty Gear X" (VG)
- Zato-One in "Guilty Gear" (VG, Japanese) 
!~

Auguste Beau