Phineas and Ferb and Dr. Horrible's Sing-Along Blog Crossovers
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Evil Villain Smack Down by shopgirl152 reviews
It's a war of words when Dr. Horrible and Dr. Doofenshmirtz argue over who the better villain is. But who will win? one-shot.
Rated: K+ - English - Humor - Chapters: 1 - Words: 900 - Reviews: 18 - Favs: 28 - Follows: 3 - Published: 7/22/2010 - Dr. Doofenshmirtz, Dr. Horrible/Billy - Complete