Tanner goes by he/they. He is pansexual and non-binary. He is 25 years old.
Tanner has a completely white body with razor-cut, fluffy white hair. He wears a pair of white pants with a white bowtie, a black tongue, and a black shirt under a white suit with four black buttons on the front and long, frilly flaps that make it resemble a wedding dress.
Tanner and Marie both died around the 1900s, explaining their affiliation with classic music and their black and white designs.