Talk:Seven's Superior/@comment-9720413-20190801212636/@comment-5527544-20190801220852

That manga does not sound canon. Ultraseven, in the show, comes from him being considered the honorary seventh member of the Ultra Garrison. All the Ultra Garrison members have code names Ultra One to Ultra Six, with Dan being Moroboshi, and since they don't know about his true identity, they labelled his Ultra form, Ultraseven.