I am going to say this yet again!

Horsey! *offers sugar cubes*

Raving angel warrior.
O: <

One winged demon.

Rapidash... lol ^___^

Slightly steampunk-ish dark angel. D;

Something that would emerge from Pandora's box. (Not the item, but the actual thing.)

A fallen angel <3

An undercover assassin.
O:

A deity!

lingerie.

Ice blue

A winged fox... just like your little tagline.

A Valkyrie.

Rapidash! That didn't register in my mind at first, though. My first thought would be "....That doesn't look like what Nikko's avatar usually looks like."

Okay, I have to say something other than 'Rapidash' or a variation thereof.

A flamin' ball of hunka hunka lurve!

Edit: Since someone stole my initial post... Black is what I see first...

Super ninja.
O:
(Deity was what I was going for.)
I think O 3o.