Gender is one of the options that may be changed when warping a blockhead in at the portal. A blockhead can be either male or female. Their gender is only cosmetic and does not affect game play.

A female and a male blockhead

There are 70 different appearances for males and 360 for females. Depending on the selected gender, a blockhead will be given a different default name; this can be changed later, however. Depending on their gender, a blockhead may make different sounds when hurt, when awakening, etc.

Gender has not been observed in any creatures.