This is how Legend of the Cybertronian of Shadows goes in My Little Pony Transformers Prime: Castle Mane-ia.
[Bulkhead, Applejack, Arcee, and Rainbow Dash walk together in the throne room]
Applejack: Well, here we are!
Bulkhead: Right where Applejack said the dare would take place.
Rainbow Dash: Uh, what's so daring about this place? This is where we got the Elements of Harmony.
Arcee: Duh. Cause it's dark and spooky.
Applejack: When I was just a filly, Granny Smith told me of an ancient legend. When Thunderwing was banished, not every last bit of his Dark Magic and Dark Energon went with him. Granny used to say, when night falls on the castle, that magic and energon take the form of... the Cybertronian of Shadows!
Bulkhead: [scoffs] Heard this story before, doesn't scare me.
Rainbow Dash: You mean, like a ghost?
Arcee: There's no such thing as ghosts.
Applejack: Nopony knows.
Bulkhead: Stop trying to spook us.
Rainbow Dash: Ugh.