Colony Sarff

Colony Sarff was a snake-like creature. On the instructions of the dying Davros he searched for the Doctor. He went to the Maldovarium and asked where the Doctor was. He then went to the Shadow Proclamation and asked again. After that he went to Karn and encountered the Sisterhood of Karn, but was unable to use his powers there. He gave his message to Ohila, that Davros wanted to see the Doctor, and departed. Unknown to him, the Twelfth Doctor was present and heard the message. He then returned to Davros and was told to look to the Doctor's friends.