Lahk

Lahk was the leader of a Rostrow space mission from the planet Birr to gathered plant specimens to bring back to their home planet. When their ship was unable to take off, he and some of his men captured the Doctor, who had just arrived on the planet, and asked him to help repair their ship. When the Doctor discovered that the Rostrows had mistakenly taken some of the native Verdants prisoner, Lahk agreed to the Doctor's plan to see the Verdants' leader Phlege and make peace with them. With the misunderstanding resolved, Lahk and the other Rostrows were allowed to leave. (DWA: Mission for Duh)