What do you think about Sam, Tucker, & Valerie becoming halfas? Like, what if the ecto-acne is actually more like ecto-herpies, so it wasn't completely cured & Sam & Tucker slowly became halfas over the course of several years.

Undergrowth & Duul Aman left sort of imprints on their ecto-signatures so they have some of the powers they had when possessed, such as florokinesis (psychic plant manipulation) & dunemancy (sand magic), but once they fully form as actual halfas, they also get personal powers. Like, Sam getting ghost magic (the only names for it I could find were ectomancy & spectromancy, however they were pretty much the same thing, it isn't necromancy either) or umbrakinesis (psychic shadow or darkness manipulation) & her unique physiology as a plant halfa makes her immune to Blood Blossoms & gives her the ability to manipulate them with her powers. Also, Tucker having technokinesis (psychic technology manipulation) similar to Technus & developing a hot core with a lightning element.

As for the thing with Sam's ghost magic, I'm thinking of making it so that magic is divided into 2 columns; living magic & dead magic. Living magic is what the living uses, while dead magic is what the dead use & they are slightly different from each other. Within these columns are a list of the forms of magic used. Living magic & dead magic have many similar uses, but I suppose you could say that they have different consistencies to them. Like, there is a living cryomancy & a dead cryomancy & they do similar things, but are not completely the same in its affects.

Also, Sam's use of magic is more all-purpose than Danny or Tucker's, making her sort of the Sorcerer of their group.

If it were my choice, Sam's ghost form would have glowing yellow eyes with pale, mint green sclera. Giving them sort of a Chat Noir look. I'm divided between whether her hair should be more of a silver white or light grey as opposed to Danny's snow white or if it should remain black. Her skin would turn a darker shade of tan than Phantom's. She'd also grow fangs, cat-like claws, & a forked tongue (but not long, thin, or prehensile like Dan, & probably Vlad's, is) upon reaching Halfa Puberty.

Tucker's eyes in ghost form would be a sort of glowing orange-red color, like blood orange or ginger or something. His hair would absolutely turn a sort of platinum shade of white. The sort that has an almost metallic sheen to it. His skin would darken until it was very dark. He'd also have longer, more pronounced, sharper canines instead of just fangs, as well as dog-like nails that aren't really sharp & their danger comes from the force behind them (like Inuyasha), & a canid tongue, upon reaching Halfa Puberty.

This Halfa Puberty would also give them pointed elf-like ears exactly like Vlad's & slitted pupils.

Danny would also get these 2 features, though he'd have canines like Tucker, a draconic tongue (long, thick, tapering, & prehensile with a pointex tip), & Inuyasha claws.

If it makes it easier to envision, imagine Sam as being a fusion of Poison Ivy & Raven from DC & Tucker as a fusion of Static Shock, Technus, & Gaara from Naruto. At least, power wise.

As for Valerie, I think she’d become something more along the lines of an ecto-liminal, but a unique one. She might be able to gain a pseudo-core & ecto-signature, but I feel like her powers would be bound to her armor. (There’s this ‘race’ in DnD 5e called Animated Armor which is a soul bound to a set of armor. There’s also this homebrew somewhere that allows a character to wear said armor. So, I think of it like Valerie’s wearing one of these armors. The only difference here is that the soul possessing the armor is her own living one.)

Like, when not wearing her armor, she'd just have the typical ecto-liminal powers. Things like enhanced physicality, better senses, ability to see in the dark, able to see & touch non-ectoplasmic spiritual entities, a sort of feather fall ability, & the ability to affect people's sense of object permanence in regards to herself.

Just small, easy to dismiss things.

But when wearing her armor? She has full ghost powers, but it's done by proxy of technology enhanced with ecto-energy. So, invisibility would work using a camouflage function. Intangibility would work based on molecular phasing vis high-speed vibration (think the Flash), & ghost rays would work by using guns that are built into the suit.

It could create interesting irony & internal conflict for her character if she were to begin to exhibit more & more ghostly features.

I don't think any of them would ever have the same potential or power that Danny does, but that's mostly because of the unique way in which he became halfa. Similar to the way I think Vlad would've soon lost his edge against Danny. Though, that also has to do with the fact that he's a businessman & it's unlikely that he made much contact with the GZ before Danny opened the portal & most of his training beyond his ghost powers was in an attempt to remain fit.

Is this an excuse to ship Amethyst Ocean & Hunter Silly (Tucker/Valerie)? Partially. But I also wouldn't mind Gray Ghost or Veggie Burger (Sam/Tucker). So, take your pick.

Also, Tucker would absolutely go by Tucker Ghouly or Cyber-Tuck & Sam would be Sammy Manes.

I wonder how Vlad would react to this?

//Ironically, you have Jim’s puppy dog eyes. xD