Shortly after the Sealed Gate of Turlo was opened, Grimlok requested thirty of travelers join him to venture into Mount Turlo to find and have one of Turlo descent blow The Red Horn and uncover a path to The Molten Heart.
Those who would join him became known as The Thirty of Turlo.
Though thirty entered Mount Turlo, several were killed on the journey by dangers within their path or during the battle against Molosh.
Four still remain within The Inner Chamber, forever trapped in agony with The Molten Heart and fueling its growth in power.