Chtorba
From Tardis Wiki, the free Doctor Who reference
Chtorba was a Silurian from an alternate Earth. He was a teacher and the friend of the Silurian Leader Morka.
During a hunt, he was captured by UNIT. Liz Shaw and the Seventh Doctor convinced the Brigadier not to kill him, and Chtorba to help the humans. (PROSE: Blood Heat)