I just don't think that Lucanis is weird enough for a possessed guy.
like, he has wings and sometimes his eyes glow. so what. he lives in a fantasy universe, that's practically normal there.
yeah, some people write him as being able to purr. it's a good start.
but we could make it more!
his nails grow super fast - he has to trim them practically each evening - and they grow super sharp and pointy. he's having difficulty trimming them too, since they're very hard.
his eyesight is way better than it used to be.
he didn't notice that in the Ossuary, what with being locked up. and afterwards, he just thought he forgot some stuff in his imprisonment. but one day he gets talking with Davrin or Emmrich or Harding and no. it turns out he really sees more colours than he used to. he's not sure but his night vision might be much better too.
he's eyes track movement like they never had before and he can see farther away. yesterday, he spotted a tiny bird hiding in a tree from at least a mile away. and then was startled when he realised this fact because since when can he do that!
Lucanis always had a thing about smells - just check his pov in the Tevinter Nights - but ever since bonding Spite it gotten so much more sensitive. he knew that some animals supposedly can smell fear but he never expected to be able to do it himself.
do you see my vision yet?