Specification:
 Full face mask:
 Dimensions: 21cm x 20cm, one size
 Weight: around 500g
 Material: Polyurethane resin casting
 Painting: Acrylic and spray paint
 Mini Mask:
 Dimensions: 15cm x 10cm, one size
 Weight: around 150g
 Material: Polyurethane resin casting
 Painting: Acrylic and spray paint
 A mythical creature that inhabits watery regions. A malicious yokai that attacks humans. It has a distinctive bowl-shaped depression on the top of its head, which must always be filled with water. This is the source of its vital energy.
 According to Japanese beliefs, when one encounters a Kappa, one must provoke it to bow, causing the water to pour from its head reservoir. By defeating the Kappa, one can gain its eternal loyalty and aid.