Junko Enoshima, the founder of the group "Ultimate Despair" and the villain of the story! A mysterious force to be reckoned with, hidden in shadow at all times. Generally talks with a playful banter. She is twin sisters with Mukuro Ikusaba, so if you are auditioning for one, try the other out as well!

Sounds like this: https://www.youtube.com/watch?v=4_yvhaBepgE (can choose which actor to mimic)