Heinkel Wolfe and Yumie Takagi are a pair of Catholic assassins and mercenaries who work for the Iscariot organisation in the manga Hellsing, and is prominently featured in the manga series Crossfire. Heinkel Wolfe is more cool-headed than the violent and impulsive Yumie, making her an excellent partner for the nun. Heinkel made two short cameos in Hellsing OVA 4 and Yumie first appears in Hellsing OVA 5 along with a full and speaking appearance by Heinkel.