The Italian Twins

The Italian Twins are engines that arrived from Italy. They are Mario and Luigi.

Friends
Thomas, Jack, Alfie, Max, Monty, Byron, Kelly, Oliver, Ned, Percy, Victor, Nigel, Peach, Daisy, Norman, and Bear

Rivals
Wario, Waluigi, and Goomba

Enemies
Bowser, Diesel, and Spamcam