Aldegor is an anime-exclusive Arrancar who joins Patros's rebellion against Aizen. He's a large, imposing guy with spiky black hair and a bull-horned skull mask fragment covering the upper-left side of his face—pretty much standard Arrancar fashion otherwise.
When Ulquiorra shows up to shut down their Hōgyoku heist, Aldegor and Menis don't hesitate to attack him from behind. Aldegor lands a solid stab before the three of them bail, figuring they've dealt with the threat. (They don't realize they just stabbed Aizen's sword in disguise, which, awkward.) The group heads to the real world, but things fall apart quickly—Menis gets tied up in combat, and Aldegor releases his Zanpakutō to fight Ikkaku Madarame while Yumichika stands on the sidelines complaining about not getting a turn.
Aldegor doesn't last long. After losing that fight and limping away, he reunites with Patros only to succumb to his injuries. His final words? Regret. He never should've sided with Patros in the first place.
Content compiled by AnimeList.moe from publicly available sources.
