Brandy should be well known to this AU as she was the start and basis of it. She and Max share a romantic interest and mutual tastes in finer things, while she is his maid she has always kept an unofficial role as his girlfriend for most of his life. Brandy always gets the most foreplay, aftercare, cuddles and kisses when it comes to intimacy. Her experience with Max is more than the others and she knows exactly how and when to tease to really get him going. Pet, mistress, maid, girlfriend, best friend and more, Brandy has had to juggle many roles.
Tiffany was met several years later. During Max's hormonal, angsty and experimental teenage years she worked for the family as an athlete. Unlike the other two she only holds rank as an Iron Collar, a commoner, of poorer education and low brow tastes. Her value is her body, being a talented and well prized player of competitive fetch among other demi sports. Max's interest in her is very much physical but this works well for her as she likes to get to the point and go at it hard. Her tight, toned, athletic body also makes her physically the most enjoyable. After a good run she is literally steaming, as hot as a bath, and twice as wet. Its no surprise Max could not keep away.
Sandy was met a few more years later, with Max now becoming a young adult. Being part of such a rich and powerful family he knew his relationship with Brandy or Tiffany would never be acceptable in the public's eyes, and thus, Sandy was found. She is a very smart, charismatic, and open minded girl who can play the role as his official wife, as interspecies marriage was a very progressive concept. She lacks the experience of Brandy, and the steaming hot body of Tiffany, but her competitive nature to keep Max entertained and happy leads her to go with any number of fetishes, kinks or role play ideas he may have. She also is the most talented out of them all at oral, as she practises heavily to keep an edge in this little game.
With Max being nearly 18 now his life has started to settle and the three have found good roles with him. Brandy is the unofficial wife, serving his emotional needs and always being the focus of his love and affections. Tiffany is the athletic servant, and the one he puts his physical focuses into, for when he wants to fuck and not make love he always goes straight to her for a nice hard workout. Sandy is the official wife and the most intellectual, while she does not have the most uses yet outside of the best dick sucking and organization, she will be the most valuable when he becomes head of the business