Crocalor is a bipedal, crocodilian Pokémon. Its body is mostly red, but its face and chest are white, and its hands and feet are black with three digits each. It has yellow rectangular scales covering its back and tail, and a pattern of black and yellow stripes on its chest. Its face has a long snout, red square cheeks, a pattern of two red triangles resembling nostrils, and a hook-like upper jaw. When Crocalor opens its mouth, three pairs of sharp teeth can be seen lining its lower jaw.
Atop Crocalor's head is an orange mass of fire energy shaped like a nest, with yellow squares patterning it. This "nest" contains a yellow, glowing, egg-shaped fireball on top, borne out of Crocalor's fire energy and overflowing vitality. Crocalor can control the fireball, sending it out and using it for its moves.
Crocalor's internal flame sac has a valve that connects to its vocal cords. As a result, Crocalor lets out guttural cries as it releases fire from its mouth. Its voice can hardly be described as beautiful; moreover, its voice becomes more destructive as it breathes more powerful fire.
- Crocalor cannot learn Encore from TM122, even though its evolutionary relatives can.
Crocalor resembles a crocodile, and the "nest" on top of its head resembles a Mona de Pascua, a traditional Spanish cake from Catalonia sometimes served with a hard-boiled egg or egg-shaped confectionery on top; but it could also vaguely resemble a bouquet of Mexican marigold, or a sombrero hat. Its affinity towards vocal performance and its overall appearance, especially the vest design on its chest, make it vaguely similar to a mariachi player. It also loosely resembles La Calavera Catrina, given the calavera pattern on its face and the sombrero. Crocalor caring for an "egg" atop its head may also be inspired by the observed maternal behavior in crocodiles. Its Fire typing may be inspired by the fact that crocodiles release excess heat through their mouths.
Crocalor may be a combination of crocodile and calor (Spanish and Portuguese for heat). It may also involve vocal or coloratura (an ornamentation of vocal melody).
Achigator may be a combination of あちち achichi ("Hot!"), mariachi, and alligator.