Thais is a half immortal elf and half Horror whom was responsible for the first attempt of the Great Ghost Dance and the subsequent massacre at Wounded Knee in 1890. He appears to have the upper body of a human and the lower half of a snake. He is the son of the immortal elf Aina Dupree and the Horror Ysrthgrathe. It is possible that Thais taught Daniel Howling Coyote the ritual to perform the Great Ghost Dance.

Around 2064, Thais was in Angkor in Cambodia looking for rare magical artifacts and is said to have been in a fight with Arleesh.

By 2074, Thais had joined the Draco Foundation’s Board of Visitors under the alias of Robert Brown.