Kerbal

An adult Kerbal male wearing a space suit

Kerbals, (Kerbos Kermulon) are the most common and widespread species of animal on Kerbin. Characterized by their bipedalism and intelligent, albeit clumsy nature Kerbals have a highly developed cognitive array that has enabled them to thrive in many environments across the planet, and develop complex societies and civilizations.

Biology

Kerbals are invertebrate mammalian bipeds with five major bodily protrusions; two legs, two arms and a head on top of their torso. Kerbals stand roughly 0.75 meters tall (2'5½") on average and weigh between 40kg (88.2lb) to 70kg (154.3lb). They have four digits on both their hands and feet. Kerbals skin is green, with variations in hue being a product of genetics, climate and age.

There is a great deal of biological variation in Kerbals – with traits such as blood type, genetic diseases, cranial features, facial features, organ systems, eye color, hair color and texture, height and build, and skin color varying across the globe.