here's a group photo featuring all the forms cyan can turn into. he can transform at will and do so very quickly, unless he wanted it to take a bit longer. origin comes in handy when he wants to run away quickly, and ghost would make him more transparent. both 2.0 and dragon are used for intimidation, but more likely cyan would use dragon, as he is much bigger than 2.0 height-wise.
from left to right: origin, dragon, 2.0, and ghost.