The creepiest comic characters of all time
Comet is Supergirl's pet horse. At first this sounds really cute, because girls love horses. Although, there is this book we once read in the Cracked offices called The Naked Ape that teaches us that girls like horses because riding them is the closest activity to non-threatening sex they can have. Not so cute anymore? Yeah, wait until you read how creepy it becomes with a stalker Super-Horse involved.
You see, according to the comic, Comet was once a centaur called Biron back in ancient Greece. He was turned into a full horse by a witch, though as a small consolation, he gained superpowers and kept his humongous horse penis.
Also, Comet periodically turns into a full human, at which point he does what any horse would do: Try to get laid with Supergirl before she can figure out he is really her horse.