The Orchestra Verdammten
Ensemble of musical villains from Gerard Way and Gabriel Bá's Dark Horse comic The Umbrella Academy. Introduced in the first series, The Umbrella Academy: Apocalypse Suite (2007–2008), they are a death cult that wants to bring on the end of the world by playing the titular suite. To that end, they recruit Vanya Hargreeves, one of the superpowered protagonists. They do not appear in the Netflix adaptation as of the end of Season 1.
They are led by The Conductor.