The Black Order

Thanos' fanatical adopted children, who depopulated worlds for 'father': Ebony Maw, the whispering mouthpiece, plus Proxima Midnight, Corvus Glaive and Cull Obsidian. Gamora and Nebula were the only 'children' who escaped. The Order died in 2018 — and their 2014 versions died again in Endgame.