Xau-Tak is a god mentioned by V during the Hero's Welcome quest. V claims to have visited at least one world they were active on, and compares them to Bandos, Tuska and the Queen of Ashes. V describes the planets they've been to as a "sea of corpses". While not known to have ever been to Gielinor previously, V states that Xau-Tak's tendrils have taken root somewhere on Gielinor after the Edicts of Guthix were broken at the start of the Sixth Age. Xau-Tak is connected to an as-of-yet unknown series of locations that are linked by a common plot, which has been around since 2005.