in "Dragon Quest" (season two, episode 21), three ponies wear a dragon costume to study real dragons. The dragons notice the strangeness of the costumed ponies and ask each other "Who's that weirdo? / I think he's Crackle's cousin / Oh. That would explain it."
Crackle looks almost identical to the pony's costume, albeit with the conventional number of limbs for a dragon.
This tag has been aliased to crackle_(mlp).