There are 9 classes in Axie Infinity: Beast, Bug, Mech, Reptile, Plant, Dusk, Bird, Aqua, Dawn. Axie is similar to Pokémon in the sense that class weaknesses/advantages play a huge part in PvP. This will be covered under PvP Mechanics.
Each Axie has four main stats: Health, Morale, Skill, and Speed.
Each Axie has 6 body parts that contribute to its stats: Eyes, Ears, Horn, Mouth, Back, and Tail.