Evolution:

    In order for a zoid you own to evolve it has to reach an amount of wins according to its class. A class 4 zoid will evolve once it has reached 20 wins and has an amount of 20 modifications. Class 3 is 15 modifications and 15 wins. Class 2 is 10 modifications and 10 wins and Class 1 is 5 wins 5 modifications. Examples Are as follows:

Command Wolf: 5 wins and 5 modifications would Evolve into a Command Wolf E its armor would increase and its speed would increase.

Zabre Fang: 10 wins 10 modifications would Evolve into a Zabre Fang E. Its armor would increase more then the command wolf's due to a superior class level and its speed would also increase more.

Shadow Fox: 15 wins 15 mods would evolve into a Shadow Fox E. Armor increases a lot more then the Zabre Fang's and its speed as well.

Geno Saurer: 20 wins 20 modifications would evolve into a Geno Saurer E. Its armor increases and speed but it is an exception it gets the Pincher Shields.

A class 1 zoid can evolve all the way up to a class 4 zoid but at class 4 it stops its growth and no longer can evolve. A class 3 and class 2 zoid evolve up to a class 4 then stop their growth. A class 4 though is an exception to the stop at class 4 rule it evolves into a class 5. Only certain class 4's can evolve past a class 4 though. Here is the list of class 4's that evolve and what they evolve into. Class 4 Evolve List