Baraggan Louisenbairn

Baraggan Louisenbairn is one of the most powerful antagonists in Bleach. He serves as the Segunda (2nd) Espada in Sōsuke Aizen's army of Arrancar, embodying the aspect of death known as Senescence (old age/aging).

Before joining Aizen, Baraggan was the self-proclaimed God-King of Hueco Mundo, ruling over Las Noches and the Hollows there as their undisputed sovereign until Aizen overthrew and humiliated him, forcing him into servitude.

He appears as a muscular elderly man with white hair, a mustache, facial scars, and a regal, barbaric lord-like outfit (including a fur-lined coat and crown-like mask remnants). His personality is extremely arrogant, prideful, authoritative, and dismissive of others as inferior "ants," reflecting his former royal status and belief in absolute power.

His Zanpakutō, Arrogante, allows him to release an aura that rapidly ages and decays anything it touches (including living beings, objects, and even spiritual attacks), turning them to dust or rot — a fitting ability tied to his theme of inevitable decay through time and old age.