Kappa with cucumber - Stock Illustration [62683000] - PIXTA
Kappa and cucumber" Poster for Sale by VivienBDesign | Redbubble
The adorable frog-alligator-platypus tetranodon is a mix of a kappa, a water dwelling yokai, and a sumo wrestler. It even eats cucumber-like slugs (on the monster hunter twitter), much like the kappa. :
Kappa with cucumber - Stock Illustration [7628139] - PIXTA