Coolie (The Talons of Weng-Chiang)

Coolie was a member of the Tong of the Black Scorpion.

Biography
Coolie, and other members, were tasked with disposing of the body of Buller. However, they were seen by the Fourth Doctor and Leela and fighting ensued. The gang were winning when a police whistle scared them away. Leela managed to detain Coolie after the Doctor tripped him.

The others ran away and Coolie was taken into custody by the police. Li H'sen Chang was asked to question him. While no one was looking, Chang slipped Coolie a capsule of scorpion venom which he then ingested, killing him so that he would not talk. (DW: The Talons of Weng-Chiang)