Jiruba is a Mado Tool, traditionally belonging to the Shadow Cutting Knight Zoro (絶影騎士・ゾロ Zetsuei kishi Zoro). Her earliest known owner was Germán Luís, father and mentor to the wielder of Garo, Leon Luís, during this time period. Jiruba was traditionally worn around the wrist of Germán, but was later worn as a necklace for his lover upon his death.
Jiruba has a very straightforward personality, usually saying what needs to be said and avoiding unnecessary chatter. In fact, she speaks so rarely that even Germán comments on how uncommon it is to hear her speak.Like other Mado tools such as Zaruba, Jiruba can detect the presence of Horrors.