Cerberus the Nightmare Train (voiced by Ray Porter) is a scary big steam engine who delivers nightmares, and hates good dreams. He captures the toys and Richard from a broken down Tracy the Little Engine, who he then derails to get her out of the way and as an attempt to tell her she is too little. He is the main antagonist of The Little Engine That Could franchise films.
- Cerberus is one of the main antagonists of the Yuna's Princess Adventure franchise.
- Cerberus the Nightmare Train was the private train for The Nightmare Family (Nightmare Moon, King Sombra, Nightmare Trix, Nightmare Hiro, Princess Black Hole, Princess Twivine Sparkle, Nightmare Rarity and Daybreaker), Bill Cipher, The Fearsome Crooks, Christine, Jackson Storm and K.A.R.R..