Games, all sorts

Progentior: Unknown
Parent Clan: Ventrue or Mekhet
Nickname: Keepers
Disciplines: Dominate, Obfuscate, Obtenebration, Vigor

Progenitor: Unknown
Parent Clan: Unknown (speculated as Ventrue)
Nickname: Fiends
Disciplines: Animalism, Auspex, Celerity, Vicissitude(bloodline)

Weakness: Permission must be explicitly granted for its members to enter venues where admittance is controlled.

Progenitor: Valentina Giovanni
Parent Clan: Unknown
Nickname: Cupids
Disciplines: Dominate, Resilience, Vigor, Nightmare (bloodline)

Weakness: In addition to the flaw of their parent clan, the Kiss of the Valentinian is extremely painful. For every blood point harvested, the victim takes two levels of lethal damage instead of one.