He is the 6th Beast Cookies, the Beast of Oblivion. He has a weapon called Silent Sea-Glass Dagger, he has a Pet named Cipher(Female Echoing Owl). He is Shadow Milk Cookie's long-lost brother. He is the only Beast Cookie who was not trapped in the Silver Tree. His Accent is French. He hate Silent Salt Cookie because he seal away his friends which is the other Beasts Cookies in the Silver Tree. His powers is Shape-shift, Teleportation, and Hallucikinesis. His Soul Jam Shape is Cracked, Fading Star. He has Astraphobia(fear of thunderstorms). He was the Fount of Knowledge just like Shadow Milk Cookie was before both of them and the other Beast Cookies got corrupted. Before Shadow Milk Cookie got corrupted after growing deeply disillusioned when he realized that the cookies he guided preferred comforting lies over the harsh truths he shared, before the Silver Tree, before everything. They were originally created by the Witches as the Fount of Knowledge, he and Shadow Milk Cookie was tasked with spreading wisdom and truth across Earthbread. As Shadow Milk Cookie shared absolute realities, he grew exhausted and heartbroken seeing that ordinary cookies could not handle the burden of truth and actively rejected it, Abyssal Milk Cookie has tried his best to comfort him. Feeling isolated, unappreciated by his creators, and misunderstood by the world, Shadow Milk Cookie abandoned his sacred duty and decided that if people preferred illusions, he would give them master-level deceit instead. This cynical shift warped his Soul Jam of Knowledge into the Light of Deceit, transforming him into a theatrical, chaotic jester and the leader of the Six Beasts Cookies, Abyssal Milk Cookie has joined them as the 6th Beast afterwards.