The Plainrunner is a medium sized, slender ground bird with a distinctive head crest. It has long powerful legs, strong feet, and an oversized dark beak. They can run at speeds of up to 80 km/h (50mph) and have the same distinct 'x' shaped talons as their cousins, the roadrunner. These birds are colorful and built for speed on the ground, but it doesn't mean they cannot fly. Their wings are short and round, and primarily used to escape predators faster than it.

Both male and female Plainrunners are very vibrant and colorful birds, with warm red and orange bodies and vibrant blue tipped beaks, legs, feathers, and crests. While there might be some variance with the shades of blue or red, it's not much. Male Plainrunners might have longer crest and tail feathers.

The Clan cats mostly see the Plainrunner as prey, but it's of course encouraged to kill it with kinesis as opposed to traditional hunting, due to it's electrical capabilities. It's feathers are common accessories due to their colorful nature and electrical resistance.