There are nine classes of Axies: Reptile, Plant, Dusk, Aquatic, Bird, Dawn, Beast, Bug, and Mech. Each Axie has six body parts, namely the Eyes, Ears, Mouth, Horn, Back and Tail. There are six different types of Eyes, six types of Ears, 34 Mouths, 47 Horns, 46 Backs and 46 Tails. Additionally, for each of the six body parts, an Axie possesses three genes: a dominant (D), recessive (R1) and minor recessive gene (R2). Both classes and genes play a role in determining the characteristics of an Axie offspring; the specific combination of attributes is known as the “build.” There are approximately 1,095,563,232 possible Axie builds in existence. To date, only 11 million Axies have been produced.