Wonderweiss Margela

Wonderweiss Margela is the 77th Arrancar in Sōsuke Aizen's army in Bleach, and the only modified Arrancar created specifically by Aizen using the Hōgyoku.

He has a slender, childlike appearance with light blond hair (parted to one side with fanning tips), bright purple eyes, freckles, and a small three-point tiara-like remnant of his Hollow mask on his head. He wears a standard Arrancar jacket with an open chest exposing his Hollow hole.

His personality is extremely childlike and innocent due to Aizen deliberately removing his rationality, intelligence, speech capability, and long-term memory to boost his power for a single purpose: to seal the flames of Captain-Commander Genryūsai Shigekuni Yamamoto's Zanpakutō, Ryūjin Jakka. He rarely speaks (only managing a few drawn-out syllables like an infant), often behaves playfully (e.g., getting distracted by a dragonfly during a mission), and shows instinctive loyalty or attachment (particularly to Kaname Tōsen, whom he views as a "pure" being).

Despite his demeanor, he possesses immense spiritual power comparable to the Espada level and serves as a specialized counter to one of the most dangerous threats in Soul Society.