Jerry is a main character in Tokyo Soul. he is clone of Taurtis created by Prof Geode. He is abandoned early on by Geode, and taken in by Sam (mostly as a slave), but ends up becoming a student and then a teacher at their school.
Unlike the other clones, he has taken what is believed to be an antidote for the expiration problem, although his head grew to an unusually large size.
His trigger is revealed in BACK IN TIME! to be the school swimming pool, which brings back memories of his birth/abandonment and the deaths of his siblings.the name jerry could be a reference to the time taurtis(the original)suffered memory loss and took the name jerry