Stel was a Vulcan male and the chief investigator of the V'Shar under Administrator V'Las.

In 2154, Stel planted a bomb with T'Pau's DNA on it in the United Earth embassy in order to cast blame on T'Pau's Syrrannite movement. Stel's actions were eventually revealed and he was forced from his post. (ENT episodes: "The Forge", "Awakening") He was replaced by Silok. (ENT novel: Beneath the Raptor's Wing)