Leapy

Leapy was a tramp who lived on the streets of London in the 1990s.

Biography
Leapy, still on the streets in 1992, was present for the Gantac's invasion of the city. He became the target of the Gantac leader Yaga, who wanted to create more humans and didn't think Leapy was worth keeping alive. Leapy would have been killed if it wasn't for the arrival of the Seventh Doctor. Leapy and he became friends and Leapy aided the Doctor in his plan to reclaim the city and defeat the Gantac. (DWM: Invaders from Gantac)