the cow with the red pants is ollie from the late 80's cartoon show "ox tales"
in germany the show was named "ollies total verrückte farm" which means "ollies totaly crazed farm" :D
It's not really a comic cosplay (only if you took the clerks miniseries) but it was too much fun to wear to keep this from you.
My best buddy since elementary school and myself as Silent Bob & Jay.
Here's more of it.
You're right. These are Ariel & 3 of her 6 sisters. It was taken on the Leipzig Bookfair two weeks ago. But my personal favorites are missing in this pic.
Noema as Alana (pink) and elsch as Adella (yellow).
this is mistress 9 from sailor moon third season.
the costume is a bit edited. she normaly wears a long dress in the same color as the top she's wearing in that pic.
this is yukari from paradise kiss and a good friend of mine ^^
and this is rikku from final fantasy x :)
EDIT: din't saw that it was already recognized XD