Percy

Percy, or Percival [1] as his full name is, is a small green saddle tank engine who lives and works on the Island of Sodor and is the sixth engine of the North Western Railway. Percy usually pulls the mail train, which is his favourite job, and works alongside his friends.
Percy is a saddle tank engine who lives on the Island of Sodor with Thomas and his friends. His best friends are Thomas, Diesel, Nia, Cana, Carly, Sandy and Bruno.
Percy is Thomas's best friend and a real joker. He has a lot of hidden bravery that he doesn't even know about. Percy also likes to ring his lucky bell to bring good luck to himself or his friends in difficult situations.
Percy is painted apple green with red and yellow lining. The number 6 on the sides of his cab is painted in yellow with red lining, and the lining around the cab windows is yellow.