ELEKTRA!

Her real name is Elektra Natchios. She is the daughter of a Greek diplomat. When her father was assassinated she swore to take revenge on the murderers. She travelled to Japan, where she learned martial arts and moved on to become one of the most skilled ninjas in the world. Her ex boyfriend is also Daredevil with whom she reunited in the USA when she was sent on a mission. She realised that she should only bring good to the world so she now fights crime using her martial arts skills.