Peri is an anthropomorphic silver fox with black, thick-rimmed glasses. They stand a bit over five feet (~165 cm) tall and have a slightly heavy build on an otherwise lithe frame, like a runner who has fallen slightly out of shape. Peri's wide hips and shoulders cast a curvaceous silhouette that sometimes makes strangers assume they are a tomboyish vixen.

Peri has a sharp, angular face dominated by a long muzzle, large ears, and bright, green eyes. Their hair is kept in shoulder-length, choppy waves and has been dyed more colors than Peri can count on paws. Currently, it's a slightly neon burgundy. Their fur is mostly the silver-blue gray typical of silver foxes that darkens at the extremities, becoming completely black fur on their ears, muzzle, forearms, and lower legs. A splotch of black wells up from their chestruff and trails off in to a strip running across the belly to the groin. Their large, fluffy tail is silver except for a brush of white at the tip.

Peri normally wears brash, playful clothes with a nod towards geek chic. For example, they might combine a military-cut peacoat in red with an orange graphic tee and a dark pleated skirt or jeans. When it's time to get fancy, they tend to prefer 1920s-esque fasion and elegant opera dresses. An intellectual and bookish fox, Peri tends to be introspective and slightly reserved. They have a cheeky, impish sense of humor and sharp wit that comes out around friends or after a few glasses of wine.