For the tank role you should always target high HP Axie class and those are: Plant, Aquatic or a Reptile. Focus on the ones that have 55+ HP when selecting them from the marketplace. Another thing to look for is that they have parts from these three classes and that they have good moves (“cards”). You need the moves that actually do something that helps Axie to defend better and protect other teammates.
For an all arounder you need an Axie that is goo