|Name in Japanese||トンサーイ|
|Debut (Light Novel)||Volume SIII (mentioned)|
|Appears in||Light Novels|
|True Name||"Peerless Decisive Slash"|
|Color of Flame||█ Fog|
Thonsáy (トンサーイ Tonsāi ) is a member of the Jewel Gang.
- Thonsáy, like the other members of the Jewel Gang, is named after a trickster from folklore. Thonsáy is the Khmer word for rabbit, an animal that plays a trickster role in Cambodian folklore. There are also depictions of rabbits being tricksters in many folktales throughout the Americas and Africa.