I spoke with a nice CM last summer who knew a few of the Tinks and two of the Peter Pan's. She said the Tinks she knew were all very "hatefully petite" females, but she wouldn't comment when I asked if Tink was ever a man.
The Peter Pans she knew were exactly like the characters they play in real life, one of them more so! Think of the pirouetting during the parades and you'll know what I mean.