I'm thinking of one of those overhead car magnets and Rapture.
One of his alters is a prepubescent boy. It's why he acts like a blushing 12-year-old whenever Mike is nearby with candy and affection.
I would venture to guess the pic of Bill in the blue dress is his alter.
The blue dress pic and bush plane pic were both done by the same artist. I think they were painting alters. The subjects in both paintings are at ease with who they are portraying, at least from the artist's view point. This would certainly be the case if they were alters. That is how they see themselves so there is no shame or embarrassment.