Spectrobes grow by absorbing H (health), A (attack) and D (defense) minergy. When its Minergy gauge fills, a Spectrobe will rise one level. Spectrobes can grow up to level 128. Think carefully about the best way to allocate Health, Attack and Defense powers when training your Spectrobes. 
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                                                The evolution from Child to Adult and Adult to Evolved forms can only occur in the incubator. You must place a Spectrobe that you want to evolve in the incubator for a certain period of time. Certain Spectrobes must also reach a certain level in addition to spending time in the incubator before they can evolve. Others must reach certain Health, Attack and Defense levels to evolve. Spectrobes that have been trained together for a certain amount of time in the same incubator will become friends. Spectrobes that are friends will have combo attacks that are far more powerful than normal. Spectrobes can only become friends with one other Spectrobe at a time. Friendships that form later take precedence over ones that form earlier. Certain Krawl have the ability to use Ultimate Techniques. When a Krawl uses an Ultimate Technique, its shadow will be marked by a red circle. 
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                                            Each type of Spectrobe has its own form of attack. Each form of attack has different characteristics. For example, close-range attacks bring a Spectrobe dangerously close to the enemy but cause a large amount of damage. Long-range techniques are less dangerous but tend to be less powerful and some attacks that are powerful at a long distance don't work very well at close range. Learning about the different attacks of each of your Spectrobes lets you make Battle Sets that suit your personal fighting style.