Skargaroth

Skargaroth was an ancient god who may have contributed to the death of the Naragi and Guthix's homeworld. He is seen as an empty, hollow, shell of a body in Guthix's memory at the end of The World Wakes. Guthix had found Skargaroth asleep among the chaos and dead and, with an electrifying, god-slaying sword, an Elder Weapon, stabbed and killed Skargaroth, transferring the godly energy and power into Guthix, turning Guthix into a god in a similar way Zamorak would be later when attacking Zaros with the Staff of Armadyl.

The sword Guthix killed Skargaroth with can be found in the first room near the entrance of Guthix's Cave during The World Wakes.

Skargaroth may have been a malevolent god, who might have brought warring races to the Naragi homeworld for use of war. The symbol on the dead warrior's body found in Guthix's memory may have been that of Skargaroth; if so, it looks as if Skargaroth's symbol is an anchor. Also, Skargaroth appears to have an ape-like figure, hence why it would seem logic the dead warrior was one of his followers, seeing as the warrior also looks somewhat like a primate.

Trivia

 * When investigating the corpse of Skargaroth it says, The dead god looms over the landscape, terrifying even in death. His appearance suggests that he was not a benevolent god, though even if he were it seems that none of the gods who visited this world cared much for the mortals living upon it.