Cacnea are round, green Pokémon. They have a dark green rhombus shape above their face, and three dark green rhombus shapes below their face that ring around its waist with a green rhombus shape on its back. Cacnea have dark circles around their eyes, their mouth apparently composed of several similar circles with thin striations below it. Cacnea has two darker-green spikes to the sides of their face, along with a yellow flower bud on top of their heads. Cacnea also have two club-like arms that are dotted with darker-green spikes with cactus-esque striations along their length and two stubby, darker-green-colored, cone-shaped feet.