Talk:List of ponies/@comment-208.87.234.180-20120328151315

It is my belief that Ditzy Doo is the straight-eyed ditzy twin sister of Derpy. She got her cutie mark for being a copycat (cutie mark is a copy of Derpy's) and iTunes replaced Derpy with her in "The Last Roundup" so the bronies would pay more attention to Applejack (after all, Ditzy DID almost get the part in the first place). This had dire consequences, and they vowed never to replace Derpy again, even if she was eclipsing another character. Damn Derpy, why you gotta be so popular?