The Prophet skin was originally introduced as a pre-order bonus and later as a promotional tie-in with Devolver Digital’s other famous franchise, Shadow Warrior (2013). The character is visually inspired by Lo Wang, the protagonist of Shadow Warrior, re-imagined as a cybernetic, prophetic mystic. He wears futuristic robes, tribal tattoos, and a hood, carrying an energy staff instead of Sam’s usual machismo.
There is no official Prophet content. However, fan mods exist on Steam Workshop (e.g., Prophet of the Serpent or Serious Sam: The Second Encounter characters ported). Check ModDB or Steam Workshop for: serious sam 3 bfe gold editionprophet new