The Nanites original function was that of building structures. They had a simple hive mind and could not think on their own. When the space station was hit with the energized particles, the Nanties were supercharged. Their intelligence was increased and they began to crystalize and replicate.
Presently they are trying to take control of their environment and see anything that stands in their way as a threat. Their attacks are electricity based and can electrify, cool down or heat up targets.
This is the first playable team.