Goldberg

Goldberg(ゴルドバグ,Gorudobagu) is the guardian ghost of Mr. Little Lake

About
This spirit was always saying loudly "Hey, I'm the reincarnation of the Mexican God, Xolotl!", but obviously it was a mere nature spirit.

Anime/Manga Difference
Goldberg has been called Nessie, which could be the Loch Ness Monster. In the Japanese Anime, Goldberg is called Jump. He used it against Lyserg.