Nanos
Nanos are one of the main objectives of the game, you get nano missions from a character and then you have to find a fussion portal and destroy the fusion in that fusion lair (fusions are bad copies of the character you get the mission from).
Once you have beaten the fusion you get a nano (A small version of the character that has a special ability to help you through the game) you can only have three nanos with you at a time (you can change your nanos with a nano machine)
Once you have beaten the fusion you get a nano (A small version of the character that has a special ability to help you through the game) you can only have three nanos with you at a time (you can change your nanos with a nano machine)