Duh

Duh was a Rostrow engineer who was a member of a space mission led by Lahk. When their ship was unable to leave Birr, Duh was assigned to help the First Doctor make repairs. After Duh told the Doctor of their mission to gather plant specimens, the Doctor realised that the Rostrows had mistakenly taken some of the native Verdants prisoner, and in return the Verdants were preventing the Rostrow ship from leaving. Duh then accompanied the Doctor on the journey to see the Verdants' leader Phlege and make peace with them, during which they narrowly escaped from Verdant excecutioners. With the misunderstanding resolved, Duh and the other Rostrows were allowed to leave. (DWA: Mission for Duh)