YMMV / The Engines Of Sodor

• Moral Event Horizon: Alfred firmly crosses it when he shunts a train consisting of highly flammable fuel tanks and goods vans before charging to Wellsworth station in an attempt to kill Gordon and Henry in 1925. The event was so horrible and traumatizing that 20 years later, this universe's Rev. W. Audrey rightfully refused to include Alfred by name in his books and writes him out early on by being "sent away in disgrace for being nasty and rude."
  Alfred: Oh Gordon, Henry you have a very important passenger to meet today, and his name IS LUCIFER!!!
• Nightmare Fuel: Alfred's psychotic breakdown in "Disgrace Of The LNER" wherein he vows to kill both Gordon and Henry. You know it's bad when even the Troublesome Trucks are horrified by what he's planning.