Boiler Toad

This is a large boiler toad that is summoned by Koji Kashin.

Ao Arc
After Ao's defeat by Boruto Uzumaki, Koji summoned the boiler toad to crush Ao to death for failing his mission.

Kawaki Arc
Koji summoned the toad in the Kara hideout to allow Amado to be transported to Konohagakure, in order to enact their plan in killing Jigen, Isshiki Ōtsutsuki's vessel. Having failed in eliminating Isshiki himself, Koji once again summoned the boiler toad, swallowing him in order to escape.