The Glasya-Labolas Clan house produced Falbium Asmodeus, the current "Asmodeus". Zephyrdor Glasya-Labolas became its current heir after the previous one that was meant to succeed it was mysteriously murdered, it was revealed that Diodora Astaroth was the one who committed the crime.
However, after Zephyrdor became useless due to being defeated in the Youth Devil Rating Game Tournament against Sairaorg Bael leaving him in an emotional state, another member from the main branch, Iryuka Glasya-Labolas was later named the current heiress.
Glasya-Labolas' clan symbol appears to be an irregular symbol, almost looking like a person with wings.
Known members of the clan include
|Lord Glasya-Labolas||The current Head of the Glasya-Labolas Clan and the father of Iryuka .||High-Class Devil||Pure-Blood Devil||Alive|
|Zephyrdor Glasya-Labolas||The former heir of the Glasya-Labolas clan, he replaced as a heir candidate due to being unable to emotionally recover from his loss in a Rating game against Sairaorg Bael.||High-Class Devil||Pure-Blood Devil||Alive|
|Iryuka Glasya-Labolas||The current heir of the clan after Zephyrdor was dismissed as the heir.||High-Class Devil||Pure-Blood Devil||Alive|
|Unnamed Heir||The former heir of the Glasya-Labolas clan, who was murdered by Diodora Astaroth.||High-Class Devil||Pure-Blood Devil||Deceased|
|Falbium Asmodeus||The former Satan Asmondeus and the Military Affairs leader. Falbium lost his right to become head of the Glasya-Labolas Clan, when he earned the title of Asmodeus and became one of the four Satans.||Ultimate-Class Devil||Pure-Blood Devil||Alive (Sealed)|
- In demonology, Glasya-Labolas is a President of Hell who commands thirty-six legions of demons. He is the author and captain of manslaughter and bloodshed, tells all things past and to come, knows all sciences, gains the minds and love of friends and foes causing love among them if desired, incites homicides and can make a man invisible. He is depicted as a dog with wings similar to a griffin.