Scent - Casper usually smells like the Head n' shoulders shampoo. He rarely wears any kind of cologne, but when he does he enjoys wearing something fruity. Casper puts a lot of effort into being clean as he's somewhat of a perfectionist so smelling like head n' shoulders shampoo is his default. 

Voice - It would be easy to pick out his voice. It is quiet, shy yet rather high pitched. He speaks rather slowly and sounds incredibly insecure when he does so.  

Body - Casper can be heard playing his Playstation Vita quite often, his fingers on the buttons. He doesn't weigh much so his footsteps can be hard to make out and he doesn't move around much unless he needs to get somewhere. His steps are somewhat careful, as if he's afraid to break something if he walks too quickly. He tries to be gentle with everything he touches but you might hear, quite often, things accidentally breaking when he picks them up.