Zaroff's guard

One of Zaroff's guards in Atlantis searched for the Second Doctor after he escaped from Zaroff's laboratory.

Biography
The guard brought Jamie and Ben to the Overseer in the mines. He searched for the Doctor again after he was rescued from being sacrificed with Ramo by his friends.

While searching for the Doctor in the market place, the guard and one of his colleagues went over to Nola's carpet stall, where Polly was hiding. He had the other guard start to poke holes in Nola's carpets with his trident, until Nola told them off and ordered them to go away and leave her alone.

The guard was present when Zaroff shot Thous.

He was later stationed to guard one of the generating stations. When Ben Jackson pretended that the Doctor was a prisoner and he was escorting him, the guard demanded the password, and they tricked him into revealing it was "Oscar". He then let them in. (TV: The Underwater Menace)