I find it interesting that Remielle refers to Wise in the most neutral and polite way possible in Japanese and not as a social inferior despite the fact she's a century older and a void hunter. I wonder why.
I feel like Rodion would be the one with the most amount of pubic hair, while Faust would be completely shaven.
Rodion would have a forest, Outis a river, Ishmael...ripped off (I think she's tough enough to handle it), Don's never grew in and Faust would probably have the "optimal" amount as dictated by the faustcord.