Destiny’s Factions video overview:
New Monarchy’s representative in the Tower, Executor Hideo, is a vendor who sells New Monarchy-themed weapons and armor for use by Guardians in the Crucible. They oversee The Grand Arena and Executor’s Challenge. It’s an organization dedicated to the City, attempting to bring back the Golden Age, who support the Queen of the Reef.
Future War Cult (FWC)
FWC’s representative in the Tower, Lakshmi-2, is a vendor who sells FWC-themed weapons and armor for use by Guardians in the Crucible. FWC oversees Eternal War and Machines of War. They are known for their military prowess, and are also known for being very secretive. They are also deeply concerned with fate, and whether or not it’s possible to alter history altogether.
A seraph is a “dragon-shaped angel” but little else is known about this faction.
The Osiris faction has its name based off the Egyptian god of death and the afterlife. Little is known about this faction, but it appears that they promote the Trials of Osiris.
Forces of the City
The FOTC is another prominent group in Destiny that may not be a faction. It’s been speculated that the FOTC are basically the equivalent of the UNSC. FOTC has been spotted on weapons and ships. More coming soon…