Bartholomew, also known by his other aliases The Werewolf is one of the main antagonists of the Holiday on Destiny series, specifically the main antagonist and arch enemy of Jack-O-Lantern and Santa Claus. 

A fearsome and malevolent entity born from the fusion of ancient curses tied to the winter solstice and Halloween night. Bartholomew embodies the chaos and destruction to destroy both of his enemies with his unbearable power. His main goal is to dominate the realms of holidays, believing that their themes of celebration are weaknesses that shackle humanity. He thrives on fear, despair, and a eternal night, determined to kill both Santa and Jack-O-Lantern and replace their cherished holidays in his own vision of unending misery.

He is the latest fighter to join the crossover fighting game - Baxverse All-Stars as it's latest playable character.

His voice is Deep, Menacing, and Guttural, reflecting his demonic and bestial nature. His tone is a deep baritone or bass, reflecting on power and dread. His delivery is slow and deliberate, yet in combat is quick and feral. 

A easy reference for an example of what the voice overall sounds like with this description is a look into Keith David as Spawn as a prime example too!