Monster Tinder

[Amaterasu]

Victor Wolfe

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Shapeshifter!

Victor seems to be an ambitious, intelligent and cunning person who doesn't mind getting his hands dirty. Especially not if it'll bring him an advantage. And from what it appears to be, he doesn't exactly regard other people's lives very highly. It's not just that he places his own above that of others - anyone would, really - but he seems to be the type of person that would sell their family for the right price. Or his girlfriend...
The remedy? Someone who is more valuable to him than what money could buy. Yes, that may be love and affection and yadda yadda, but that may take years to develop - faqr too long for opportunities to present themselves that Victor could not refuse, that he would end up alone again, leaving his partner behind to reap the spoils alone. Shapeshifter, or most of the trickster-type Obakes really (kitsunes, tanukis, bakenekos etc.) would be a far more valuable partner to have. They build up on the traits that Victor has as well as his skill of infiltrating and spying, through their shape-changing power. A doppelganger would not be as "efficient" as a shapeshifter who can take any appearance, not just that of an existing person, and would thus be able to take any role necessary to support Victor with whatever he sets his mind on - be that the role of a guard that has supposedly captured an interloper and brings him to the inner sanctum of the area, or that of a black cloak to shroud him in darkness so that he may hide and let wandering eyes pass by without seeing him.
Not to mention, Shapeshifter has a way of escaping tight situations if Victor decides to throw her under the bus one day, and while she may not be happy about it she wouldn't mind as much as other monstergirls who demand more trust. Granted, Victor may find himself at the recieving end of a revenge prank, but that's the price he's gotta pay to keep his partner in crime.
The only issue about Shapeshifter is that they can't sleep in the same bed, or room. Because a human mind could not take the sight of an eldritch horror without going insane, and as strong-minded as Victor may be, he is unlikely to pose an exception to this. Unless of course he prefers to try his luck with a bakeneko or a kitsune?