Lady Shiva confronted Ocean-Master in a rented house directly across the Allen family home, attempting to dissuade him from killing the eighteen family members of the heroes as revenge for his incarceration. When Ocean-Master refused to back down, she swiftly decapitated him and vanished with his corpse.
Sandra Woo-San is the best martial artist in the world and a highly sought after assassin, acting primarily as an opponent of Richard Dragon, the Question, Batman and later Black Canary and the Birds of Prey. She is the mother of Cassandra Cain, who she conceived to create the perfect warrior.
This is her fourth animated appearance. She appeared in Superman/Batman: Public Enemies, Beware the Batman and DC Super Hero Girls.