AIGHT here's all you need to know about Malch:

They're witty, sarcastic, a great planner, and know how to get stuff done. They're very, very slow to trust but once you have it, they're loyal to the core. Their standard approach to meeting others is to judge them vocally and snark at everything they say, but they can roll with the punches and shut themself up when stuff needs to get done.

Their fatal flaw is pride and vanity. They're petty and view themself too highly, and can end up speaking when it is not appropriate to do so. They also have an innate desire to be in control and can get pushy very quickly if things don't go according to plan. For this reason I can see them wreaking havoc or at least being a nuisance to others, and I think it'd be fun to craft them into a more overtly negative character over time. I can easily see them becoming a troublemaker. But obviously they are a small child now, so that'd be much farther down the road, and they need some new friends/allies first. They're also pretty easy to get some comedy out of, so there's that, too.

They're a petty rich kid, basically. If anyone wants to have fun with 'em I'm open to more or less anything. :P

I think Fang and him could have some interesting interactions. They're so much alike that they'll either hate each or have fun with each other, I don't know which. As long as thing's go Fang's way she rather enjoys snarking other people and causing trouble for them. She also considers herself to be "queen of thieves" so if Malch is into getting into trouble perhaps they could be thieving partners? Though if Fang isn't allowed to be in charge then that'll never happen XD she's either got to be leader or have an equal partnership or she won't cooperate.

Ooo, that'd be a fun dynamic! They could be trying to work together while secretly trying to one-up each other and gain full control. That's got potential, I'd love to do something like that.