Captain Thomas Carswell is the human servant of Padma and a part of his triumvirate along with Gideon. However, their triumvirate doesn't appear to grant them similar benefits as Anita's triumvirates do. It's unclear whether this stems from Thomas having been just a regular human before being bound by Padma, or from their mutual lack of unity. Although Padma's human servant Thomas seems to hate Padma, but is forced to obey his orders.
Thomas is 5' 7" with dark gold hair cut very short and a brownish mustache, curved back to meet brownish sideburns. He is always dressed in a version of the British uniform he’d worn when he was a soldier for Queen Victoria in the 1800s.
In Burnt Offerings, after the delegation of the Vampire Council arrives in St. Louis, Thomas along with Gideon are under the orders of Fernando while Padma is dead to the world. Later that day Thomas and Gideon help their master recover from the injuries Anita made.
In Bullet, when their master is possessed by Marmee Noir, Thomas along with Gideon are forced to help their master attack Anita. After Belle Morte uses the ardeur to overwhelm Padma and escapes, he forces Gideon and Thomas into helping him again, and although they could have stopped Belle, they let her escape.