Mercanth's mother raised him in the Shivering Isles until he was about three after escaping the clutches of Molag Bal. This left her and her son as vampires. Then, Sheogorath had a proposition. To spite Meridia - Daedric Goddess of Light - over a lost wager, he would make an undead cover band. He had some of his subjects train Mercanth in the musical arts and now he is always preforming for the souls that have died in the Shivering Isles. Mercanth is known to be anything but serious and has known almost complete freedom in his entire existence of over a couple hundred years.

Mercanth has limited shapeshifting abilities. As a pure-blooded vampire, he can take the form of a vampire lord. Due to his father, he can also turn into a bat behemoth and crush enemies before draining the life from them. Otherwise, his humanoid form is 6 foot 3 inches (190.5 cm) with jet black hair and red or black irises. He love dressing in red for both fashion and function. His extended stay in Sheogorath's realm has altered the rules of being a vampire, so he can drink red pigments instead of blood. So his clothes are back-up food in a pinch.

Mercanth knew that Lucianth was the one when he saw the other man, but he was a bat at the time and couldn't approach him. Luckily, Lucian figured out that he and Lizbeth were up to something, and he wanted in. The two have been inseperable ever since Lucianth joined them on their journey to get Britneysil and Fioria back.