Michael had no personality
I mean - the guy from A Moi Seule and Priklopil from 3096 Days both have distinctive personalities - Priklopil is a madman and Vincent from the French movie seems quite a friendly dude who established a father-daughter - like relationship with Gaelle and only sometimes, when he remembers that that's him who is the captor, he shouts at his captive and complains about his having to buy all that crap for her, he exhibits outbursts of violence. But Michael? He's so... boring, no features that would characterize him, just an ordinary average dude.
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http://www.fanfiction.net/u/2119876/