Iona (I-401)

Iona is the Mental Model of the I-401 submarine. She's one of the oldest Mental Models in existence and, having spent around two years with humans, she is one of the most versed in the human way of life. Unless she reveals her abilities, it is practically impossible to distinguish her from a normal human. Iona appears as a girl in her late pre-teens with long white with blue tint hair, pale skin and green eyes. Her clothes vary, especially in the manga.