Yoko is a strong-willed, hot-blooded and somewhat temperamental girl that can frighten any man once provoked. She's determined to get what she needs done, fight anyone who opposes or upsets her, and is one of the few people Dark Schneider actually fears. She acts much like a tomboy and is very protective of Lucien. Despite any romantic affection or attraction for Dark Schneider she may have, she immediately refuses it, and rejects any/all of Dark Schneider's attempts at intimacy with her. 