Title: "Completing the Look"/"A Friend You Haven't Met Yet"/"Get Me out of this Hellhole You Filthy Humans"
Fandom: Doctor Horrible's Sing-Along Blog
Pairing: Billy/Penny
Rating: PG. Contains the words "crap" and "balls." (oops.)
Summary: Billy wants a cool new sidekick/accessory, but you can't always get what you want.
AN: Written for a prompt by helsmeta on comment_fic.

( Every evil genius has a pet cat. )