Sil

Sil was one of the Mentors from Thoros Beta, and actively involved in various unethical business schemes.

As representative of the Galatron Mining Corporation on Varos, Sil lied about the value of Zeiton-7 to get the cheapest price he could. He was also interested in buying and distributing recordings of the various tortures which passed for entertainment on Varos. These schemes ended when the Doctor informed the Governor of Varos of the true value of Zeiton-7. (DW: Vengeance on Varos)

Later, Sil allied himself with the Ice Warriors to profit from their invasion of Magnus. (TME: Mission to Magnus)

In 2379, Sil became involved in selling weapons to the people of Thoros Alpha. Also, he and Crozier attempted to help Kiv transfer his mind into another body. (DW: Mindwarp)