Diesel 10 is an evil diesel who dislikes steam engines. He has a Hydraulic claw named "Pinchy", which resides on his roof, and two Bumbling side-kicks named Splatter and Dodge.
Diesel 10 is a very evil diesel on Sir Topham Hatt's Railway, He means trouble and causes trouble. He dislikes steam engines or as He calls them "Steamies" somehow Sir Topham Hatt usually stops him in his Tracks.
Diesel 10 is and is also based on a BR Class 42 "Warship" with a Hydraulic Claw.
After the end in Claw of the Law, Diesel 10 was scrapped forever for his antagonistic actions and never appeared in the series forever.