Null

Null is a shape-shifting supernatural being that serves as the primary antagonist of the fifth season of PGXD Adventures.

Birth
Five years after the death of Vampire Viper, Tabuskus begins being haunted by visions of both Vampire Viper and Entity 303, leading him to believe that the curse placed on Vampire Viper's dagger is causing the souls trapped within the blade to release themselves. He decides to burn the blade using the Sacred Flame of Xull, hoping that the fire will destroy the souls trapped within the blade. However, once the blade had been thrown into the fire, a lightning bolt struck the flame pit, splitting the blade in half, and causing a humanoid form to emerge from the fire pit.

This form was Null, a fusion of every soul that was killed using the blade.

Death
Fxceless, Tabukus, Tim, and Reload entered the Black Forest of Tulan to fight Null once and for all. The battle was extremely intense, with Null inflicting serious injuries on each of the four.

Fxceless channeled the last of his energy to perform extremely powerful magic, blasting a golden beam of energy directly into Null's heart, causing a huge explosion. Once the smoke cleared, Null's souls began to unbind from each other, causing him to disintegrate and release large amounts of temporary soul energy. Using this temporary energy, Fxceless, who was near death from the amount of soul energy that he had expended, bound his soul to Tabuskus' Obsidian Sword, with a severely injured Tabukus promising to return Fxceless' soul to his original body.