Tanik's species inhabited the planet Smyslov 3. They were humanoids distinguished by their horse-like faces with tusks. The Eleventh Doctor initially believed them to be the friendliest locals in the galaxy.
When an earlier version of the Doctor and Amy arrived on the planet shortly after, Tanik and twenty guards surrounded them and pointed guns at them. He told the Doctor of his actions on the planet and tried to disable his TARDIS and torture them. Before he could do so, the Doctor and Amy escaped in the TARDIS. (PROSE: Wish You Were Here)