I made The Lost Soul into an arid Escalade aaaaaages ago, before they got redrawn. The old escalade really suited him but I don't feel it does anymore (they looked sharper, serious and more fierce, now I feel like he looks squishy and fluffy...)

Soooo, any recommendations on what to make him into? He's basically a blank slate. He's lost in a maze of white with no clue about his identity (so I kind of like a black or white color scheme, but I'm open for anything).

I like more colors of the escalade, but I like in any case: the darkmatter (not too tame), graveyard (not squishy and fluffy) and the twillight (nice eyes).

Have you considered turning The Lost Soul into a Paralix? The reason I mention it is from what the news had stated when they introduced the silver and cherry colors for Paralix. In the description text they said that they fly: A pet that you may see soaring the skies of Shengui Guo, the paralix now comes in both cherry and silver! http://subeta.net/news/16057

Arid, Twilight and Silver all would make a nice spirit based character.

One other type of pet that came to mind was Experiment (Common, Scribble or Chibi colors). Those always looked very spirit / ghostlike to me.

Good luck on deciding the perfect color / species for your pet, The Lost Soul!