When first starting, recruit as many Transformers as possible. The higher their tier, the better the robot. Also consider their type when deciding how to best build your team. Once you have a good team, begin upgrading those robots only and do it evenly. Always try to have a Transformer has the blue lightning symbol for a first strike advantage. Even though the damage caused by that specific robot will decrease, giving your team the first shot is an advantage. Each robot belongs to a particular "family". For example, Autobots marked with the red icon on their portrait. If you create a team of the same type of Transformers, then you will get an extra bonus in all battles. Three different resource types are required to unlock Transformers. All of them are dropped during combat. Fight and win regularly to gain those resources. There are three categories of Transformers can be obtained; Characters (the regular robots), Exclusives and Combiners. The Exclusive and Combiners are the best types. In order to craft a Combiner, you will need three Exclusives. Obtaining Exclusives is difficult and requires a lot of material bits and usually from two or all three categories.