Virizion is a quadrupedal stag-like Pokémon. The top part of its slender body is covered in lush green leaf-like fur, while its underbelly is a pastel-green hue. It has pink-tipped leaves growing from its neck, and a fringe of green leaves protruding from beneath its shoulders. It has long curled green horns atop its head. Its face is deer-like in appearance, and it has pinkish eyes. It appears to be wearing armored boots with pink tips at the top and black markings at its toes.
Virizion does not trust humans. When humans destroyed its homeland, Virizion fought them alongside its Pokémon friends, along with Cobalion and Terrakion.
Virizion's horns are extremely sharp. It is extremely swift, and uses whirlwind-like movements to confuse its foes.
Virizion, Terrakion, and Cobalion all have the same eye shape.
Virizion's shiny form seems to be the opposite color of the regular one, because they are switched around. The Body/Fur color is pink, and the accessory stripes are green. The other way around for the normal one.
Virizion, Terrakion, and Cobalion appear to be based on the Three Musketeers.
The first part of this Pokémon's name is a reference to a glass, viridian. It's also a reference to the fact that Virizion is the more feminine of the threesome, as well as Virizion is a grass-type, and that the Pokémon's color; viridian, is a shade of green.