Subjective tropes for the Mega Man Zero/My Little Pony: Friendship Is Magic crossover Manehattan's Lone Guardian go here.
- Memetic Badass: The Green Biker Dude has this status in-universe. He is described as "an absolute ace" by Leviathan spoken of in hushed tones and being capable of doing anything with a Ride Chaser, with his death at the start of X2's events serving to immortalize him.
- Moral Event Horizon:
- It was known that Cocoa Mocha was evil when his ambition to dethrone Celestia was revealed. Happily stealing the body and life of Hazelnut, one of his own grandchildren, in order to continue pursuing said ambition cements it.
- Illudere crosses it in "Shine Aqua Illusion" when she subjects Leviathan to an especially cruel case of Yank the Dog's Chain, trapping her in a Lotus-Eater Machine-esque illusion that lets her live more than two hundred years in an Alternate Universe where everything started going right for humanity and Reploid-kind... and then returns her to Equestria's reality after she dies.
