Diane started learning martial at a young age when her father brought her to his old dojo. Diane took such a liking to it that she quickly decided on it; she wanted to devote her life to martial arts. Her mother was hardly approving though. She wanted Diane to pursue an education for better financial stability. Tensions between mother and daughter grew as they refused to compromise.

By the time she became of age, Diane grabbed an efficiency and got work cleaning at the dojo to pay her rent. In the years following, her proficiency with Aikido grew to the extent that the sensei decided to hire her on as an instructor for the child students.

She maintains a friendship and friendly rivalry with Suzu, a Zangoose working as a higher level instructor in the dojo.