Hello MCU-fans :)
I'm sure that I am not the only one who wonders how Donnie Gill got his powers. Strangely, no one on this Wiki has ever discussed about this topic, so I decided to make a blog post myself :D
First I'll tell you my theory: When Donnie froze himself with the ice grenade (I'll just call it that :D) and Simmons injected him with something, that maybe changed his DNA so that he got his powers.
Okey, I have to admit that it is a pretty lame theory, maybe freezing himself just activated a latent power he always had.
But now I would like to hear your theories :)