|Out of universe information|
Tobay was a boy living on the planet Abydos.
After the return of Colonel Jack O'Neill to Abydos and the kidnapping of Skaara and Sha're by Apophis, he was told to bury the Abydos Stargate after SG-1 left by Dr. Daniel Jackson and to tell Kasuf to reopen it exactly one year later. (SG1: "Children of the Gods")
Several years later, he helped Teal'c defend Abydos from the invading Jaffa who were attempting to secure the Eye of Ra for Anubis. He was killed after Anubis destroyed Abydos and is assumed to have ascended with the help of Oma Desala. (SG1: "Full Circle")