| Agent Billy | |
| Home planet: | planet earth |
| Home era: | 1998 - 2009 |
| Travelled with: | Eighth Doctor |
| First appearance: | Series 1 Episode 1 |
| Last appearance: | Series 1 Episode 4 (cameo) |
| Portrayed by: | Siomin |
| Series: | ''My Old Episodes'' |
Character History[]
he was short lived compianon of Eighth Doctor
he had affair with katrina mills
he had father a son with katrina mills
he had disappeared in blackpool
he been friends with Agent Ian
Appearances[]
Series 1 Episode 1
Series 1 Episode 4