User blog comment:Teien/Sangria (Crew member of the Immortal Garden)/@comment-28898344-20150128000759/@comment-25574902-20150129005132

While she certainly has the most powers and personalities I don't know if I'd go as far as to say she is the most powerful. Certainly her ability to kill other immortals would make the other crew members wary, but her actually being able to match them would depend on the personality.