Spencer was a Bio-Fused streamlined tender engine.
Not much known is about Spencer's past before he was Bio-Fused into an LNER class A4 tender engine. His face was caught on fire while using high speed. This was due to an overdose of Welsh Coal because of an experiment by HiT Logistics.
- Thomas The Tank Engine: Project G-1
- Gordon and the Caravans (Intro cameo)