wraith!Ghost but he's warm - hear me out. Random bad science bullshit go!
Shadows are cold because they are absence of direct light and warmth, but in my mind, wraith powers aren't entwined with shadows. They're kinda like smoke, opaque and flittering in and out of different densities of solid mass, to the point he can just phase through walls right. To do this, his atoms and such need to vibrate like crazy, like the way The Flash goes through walls is by vibrating his atoms. Basically vibrating them exactly so they pass between others in a thing called "quantum tunnelling". (like I said, random bullshit go)
This would mean wraith!Ghost is really warm, even if he looks chilly and has a cold personality.
I think then he would be subject to being the 141's personal heater. Sure, dragon!Price puts out a lot of heat, but if Ghost is constantly flitting in and out of states he would be mad toasty. His pack pressing into him for warmth, despite his protests. Never any need for blankets in the den with two heat sources like these. Gaz and Soap would be sweating.
Imagine further then a reptile!reader, any species of reptile would apply. Joining the 141 in the late autumn and struggling with the most likely very poor heating on the base. Wrapping yourself up in layers, and keeping close to Price as you adapt to the new social events and living space. Price is happy to accommodate you, calling you "hatchling" affectionately. You don't really clock that Ghost is warm, because you've been wrapped up in Price's arms and wings since you joined.
Then one day the already poor heating breaks, and Price is stuck in a meeting. You're curled up in the den trembling with brittle cold, buried under many blankets and layers. Ghost only pops in to grab something small, and upon seeing you curled up and trembling, just huffs. He moves to the den and lifts the blankets, granting a defensive snarl from you. Ghost flicks you on the nose. "Shut it or I'll leave." You don't have the energy to argue back, but when he joins you under the blankets and pulls you into a loose embrace, you simply melt as you finally notice how warm he is.
Finally, you stop trembling, sighing softly. Able to mumble out a "Thank you." As feeling returns to your fingers and toes. Ghost doesn't say much, only closing his eyes for a brief respite. "Don't get used to it. You've got me till Price is done."
Yet he stays long after Price's meeting finishes.
(when is it appropriate to put a read more in?)












