>If I had come to love a manga-only character, and then watched the anime of the manga; the character's voice, expressions and body movement would significantly affect my attraction to her.
>Ah, actually there is something like an example. I've never played Idolmaster, but I've felt very attracted to Anzu Futaba just by her descriptions in wikis and other sites. However, once I've listened to her character song (I came upon that much later), her voice put me off a bit.
Well, it shouldn't actually affect your attractions to her because if so, chances are it's just infatuation, much like physical attraction. You know, the stuff the makes 3D relationships poisonous.
I mean, my beloved Marisa, for example, her wiki descriptions right from the start was that she was too straightforward, too self-serving, a thief and a person that picks fights just for the hell of it. And on the actual game, players regard Marisa as a very difficult character because she was too fast and she fires mostly in straight patterns. I can attest to that. Even fan depictions are no better in this regard, as she's depicted outright as a man, either by joke or seriously. I can't even look at her naked. But those didn't put me off her.
And there people here at /mai/ that have Saya from Saya no Uta as their waifu. Her girlish form is just an illusion and her real face is monstrous. (Should I even spoiler that?) Yet they're not put off her.