Asher is a German red fire engine chugger.
In his first appearance, he was brought in specially by Jackman to give Wilson some advanced fire fighting training. But during training, Wilson uses up all his water and the fire gets so strong that even Asher couldn't fight it. Wilson then grabbed a wet blanket from Brewster and threw it over the fire. Asher and Jackman both praised Wilson for his idea. He came back during the Track Dash Fun Race to temporarily run Chug Patrol whilst Jackman, Calley and Wilson were racing.
Asher is based on the Windhoff Cargo Sprinter. He is a single power unit with fire fighting equipment on his transport bed.