The Meganites charge their energy during battle primarily by connecting with melee attacks. However, they also charge their energy in small increments with each step they take while moving. One trick to charge your energy quickly and safely is to repeatedly tap one of the buttons that control foot movent. The Meganite will then step in place repeatedly, charging their energy faster than if they were to walk normally. This is safe because it can be done from far away while waiting for your opponent to advance. Please note that this only works on the Normal control setting where you are able to control each foot manually.