[Cazzidy]

-=What you're allergic to cats?...=-

the neon green eye...

-=It's alright, I'm allergic to you...=-

[Star Seeker]

your skin because everything else is so dark

[Fallen]

The hair and eyes, because both haven't been used much on avatars.
(Well, previously to the event for the eyes. The hair I don't see much though.)

[Beast]

I noticed both the hand and the green eye right away, the green really pops with the black and white theme.

[Poggio]

His name, XD I was expecting beast from beauty and the beast.

[Cazzidy]

-=What you're allergic to cats?...=-

the claw...

-=It's alright, I'm allergic to you...=-

[Glass Heart]

single red eye

[Fallen]

The slight bits of purple in the eyes and necklace.

[Juneberry]

I notice the white hair and the slight bit of white in the claws (I call them claws, yes). It's rather easy to notice since most of the avatar is black. It's rather interesting to me :3

[Kotetsu]

The green dress.

[Reyoki]

The large white wings

[Nightmare]

The purple boots.

[speedy kitty]

the staff.

[Nightmare]

The gate in the background.

[Ciel Phantomhive]

I first took notice of the avatar's staff that they are holding onto.

[Sugar]

the bare feet!