Getorix

Getorix is a druid non-player character who can be found in the lobby of the Fist of Guthix minigame.

Fist of Guthix Theory
Getorix's theory of what the Fist of Guthix is, is that the god Guthix returned after the God Wars, and seeing that other gods were questing for power, punched the ground in anger. The imprint of his punch contained strong magic, which is the reason Fiara (a guardian of Guthix) guards the area. Pontimer and Alran also have theories about this.