- Kim Diehl (キム・ディールKimu Dīru?)
- Voiced by: Chiwa Saitō (Japanese), Caitlin Glass (English)
- A lamp meister and the partner of Jacqueline O'Lantern Dupré. She is usually annoyed by Ox's attempts to yearn for her love, and feels obligated to charge anyone who desires her to do something for them. She is a tanuki witch who possesses regeneration magic, which goes against the usually destructive nature of witches. She tries to keep her status as a witch a secret from DWMA out of fear of what would happen to her, and flees once her secret is exposed. She comes across Arachnophobia and is brainwashed into serving them through the organization's Morality Manipulation Machine, though Ox breaks through to her and persuades her into returning to DWMA, where she is allowed back and becomes a member of Spartoi. In the anime, her status as a witch is never revealed.