Jonelias monsterfucking cnc… maybe even somnophilia?
Elias would enjoy having monster!Jon under him. Maybe drugged, maybe just restrained. A terrifying monster capable of ripping him apart helpless beneath him, moaning as Elias thrusts deep inside of it even as it pleads for its father to stop, not to do this to it. Jon thrashing and whining and begging for Elias not to cum inside, unable to fight back. Elias in complete and total control over his child. Breeding it, Jon unable to stop him…
I think he’d also enjoy getting to use Jon while it sleeps. Sneaking up behind a huge, dangerous predator. Nudging its tail gently to the side so he can sink into its soft, warm cunt. Slowly, tenderly breeding it while it sleeps on, utterly oblivious to what its father is doing to it’s vulnerable body…
And of course either way Jon would enjoy the power dynamic. Not being able to be in control. It’s not its fault if Elias gives it everything it wants, not when he won’t listen when it says no. Jon’s always enjoyed the vulnerability of it, of being helpless before its father. Having no control, its agency stripped away, but it feels so good and its safe and it all it needs to do is lie there and take it. None of the awkwardness with feelings or attraction or reciprocation it never knew how to provide as a human. Just pleasure.
But I think they’d also both like somnophilia the other way around too. Jon who needs constant breedings during its heat. Can’t even be bothered to wake Elias up before pulling out his cock and sinking down onto him. Whimpering “please please please” as it tries to take its father harder, deeper. Elias waking up completely pinned beneath Jon’s weight. Limbs and tail wrapped around him, keeping him in place, barely even able to move his hips up into Jon’s desperate bouncing. Hissing “wait, stop, don’t-” but it’s too late and he’s emptying himself into Jon’s fertile womb, cumming deep inside….
It goes without saying that Elias should also mark Jon while it sleeps btw. It’s tough chiton is too thick for Elias to leave hickies and bite marks, of course, but there’s other ways to leave a “property of:” sign on his pet.
Elias standing over a sleeping monster!Jon, fisting his cock and stroking himself off. Aiming so when he cums he paints Jon’s swollen belly and chest with his seed, or perhaps he finishes across its sleeping face. Maybe after he steps a few inches closer, hand still wrapped around his spent dick, and lets put a stream of urine….. just to emphasize his point <3