Personal Info:
Real Name: Unknown
Also Known As: No known Alias
Place Of Birth: Gotham City
First Appearance: We Are Robin Vol.1 #2 (2015) Modern Age Villain
Known Associates: Talons, Court Of Owls
Group Affiliation: Talons, Court of Owls
Base Of Operations: Gotham City
Grudges: Robins
Creators: Lee Bermejo and Jorge Corona
Dementor is a Talon, a highly skilled assassin and master of many forms of armed an unarmed combat. They are also expertís with throwing knives and swords.
Weapons: A Talon is typically armed with many specialised throwing knives and a sword. Dementor carries a sickle.
Cellular Regeneration: The Court Of Owls infuses their Talonís systemís with an unspecified chemical compound that can reanimate dead tissue and heal living tissue over and over again. The compound is fuelled by body heat, and so exposing a Talon to conditions that can cause body temperatures to drop will compromise their healing abilities. The Court refers to the process of infusing a Talon with this compound as "drinking from the cup of immortality". The compound also allows the Talon to be cryogenically frozen, for a return to life at a later time.
Long thought to be just an old Gotham legend from a children's rhyme, Talonís are the Court of Owls' lethal assassins, dispatched to slay anyone who threatens their centuries-old dominion over the city.
Dementor at Comic Vine