Bash and Dash are two Bio-Fused tank engine twins.
Not much known is about Bash and Dash before they were Bio-Fused into Company No.1 tank engines.
One of them, Bash, is mentioned by Owen Routh in a text argument with Keith Hartley, along with Harold and Smudger, implying that he is dead. It is likely that Dash is also dead, due to their telepathic links.
- Thomas The Tank Engine: Project G-1 (stock footage cameo)