Yanma is a large, red dragonfly Pokémon. It has a long thin abdomen and a comparatively short thorax. It has three pairs of two-toed legs and two pairs of wings with red bands on them. Its head is also mostly red, except for its very large, bright green eyes, which take up most of the space on its head. Its eyes can see all around its body allowing it to have an extremely high evasiveness, and the end of Yanma's tail has two flat extensions from the sides and two spikes in the center.
It can flap its wings very fast to generate shock waves which can break glass. Yanma's trademark attack seems to be SonicBoom, as seen in the Pokédex.
Yanma displays its adept abilities in flight by making sudden stops and turning midair to quickly chase down targeted prey. It can hover in one spot by flapping its wings at high speed, and flits about to guard its territory.
Yanma is very rare except for the occasional swarm. It is often found in wooded and swampy areas.
It is a hunter that uses its amazing eyesight and speed to pursue its insect prey.
This Pokémon was unavailable prior to Generation I.