Kaminarimon

Kaminarimon is a spoof Digimon whose name is derived from "" (雷). It has control over lightning.

Digimon Frontier Original Story: Things That Want To Be Told
Kaminarimon is an imaginary Digimon that J.P. thinks up when trying to come up with strategies to win Zoe's heart. In this imagined scenario, he would bribe Kaminarimon with chocolate to attack Zoe and, while she is helpless, J.P. would swoop in, defeat Kaminarimon to save the day, and have Zoe fall in love with him. J.P. rejects this idea with the knowledge that, should this hypothetical Kaminarimon actually try to even fake-attack Zoe, she'd fight it herself and win.

Digimon World
Kaminarimon is an unreleased Digimon who would have been digivolved into with the unused Electo Ring item. The Electo Ring is the only remnant of the Digimon to still exist, with Kaminarimon's name appearing in its description.