Ghost in a Jar, always good at pointing out potentially obscure comedy.
This was designed so you can scale him to fit the jar you will be using.
I printed the body:
95%, 0.3 mm layers
50%, 0.2 mm layers
25%, 0.1 mm layers
I used 10% infill, but you can use whatever you want.
The face will work for prints above 60%. Smaller than that and the slicer will likely lose the eyebrows and mouth. A black sharpie works fine for drawing on the facial features.
The stand can be used if you want GiaJ to float mysteriously in his jar. Scale it the same as the body.
Obviously, you must use glow in the dark filament. It's some sort of law I think.