Wonderweiss Margela (ワンダーワイス・マルジェラ, Wandāwaisu Marujera) is the 77th Arrancar in Sousuke Aizen's army. He is the only modified Arrancar (改造破面カイゾウアランカル, Kaizō Arankaru; Spanish for "Modified To Tear Off", Japanese for "Modified Ripped Mask") in existence, having been altered by Aizen for the sole purpose of sealing away the flames of Ryūjin Jakka, the Zanpakutō of the Captain-Commander of the Gotei 13, Genryūsai Shigekuni Yamamoto.