Gaavrin was a Tellarite freighter pilot who worked with his brother Skalaar.

In 2156, the Enterprise encountered Gaavrin and Skalaar and provided them with tungsten, cobalt and magnesium to rebuild their warp coils. The brothers informed Captain Archer that they found Tellar's withdrawal from the Earth-Romulan War to be dishonorable. (ENT - The Romulan War novel: To Brave the Storm)