Please visit the Thomas the Tank Engine wiki, upon which Shining Time Station is based.
Cranky was a character created for the fifth season of Thomas the Tank Engine and Friends, who made a brief cameo in Thomas and the Magic Railroad. In the original script, he would have had a bigger role when he dropped fruits onto Splatter, Dodge, and Percy, but it was cut. However, his model was being restored before the announcement was made, and afterwards became set decoration (top left). He is an olive green in Thomas the Tank Engine and Friends, but you cannot see this in Thomas and the Magic Railroad when Diesel 10 leaves the shed while Thomas told Percy that he's clever.