Who would win in a battle? (My favorite part.)

Chandelure's faster than all of the others, and with that insane Sp. Attack, its Shadow Ball won't be taking any prisoners here. Chandelure for sure.

Who has the coolest design?

Again, Chandelure. It's so eerie... and original. Cofagrigus is pretty cool, too, and to an extent, so is Jellicent (Pringles!), but Chandelure wins.

Who is the creepiest?

Cofagrigus puts up a good fight here, with those shadowy hands. But just look at Chandelure. Just one look at that thing, and you know it wants your soul.

Who has the best typing and moves?

I wish I could say Chandelure again, but as cool as the concept is, Ghost/Fire has a lot of weaknesses, and outside of its STABs, it only has Energy Ball, Hidden Power, and (for setup) Calm Mind. This time, Pringles Jellicent wins, with its Water/Ghost typing and its awesome, wall-oriented movepool.

Chandelure, Chandelure, Chandelure, and... Jellicent. Onibi-chandelier for me!