Donald Gill

Biography
Donnie Gill was a former student at the S.H.I.E.L.D. Academy of Science and Technology who was brainwashed into working for HYDRA during the HYDRA Uprising after gaining the power of instantly freezing any item around him. After the Battle at the Sandbox, Gill broke free of his brainwashing and went into hiding in Morocco. Sunil Bakshi tracked him down and attempted to bring him back to HYDRA, managing once again to trigger his brainwashing despite Gill's rebellion on the organization. On a clash against S.H.I.E.L.D. on the Maribel del Mar, Gill was shot by Skye and was left to sink down to the bottom of the ocean.

Powers
Freezing: Gill had the ability to lower the temperature of objects upon touch. Jemma Simmons postulated that Gill's powers were not genetic, but instead environmental, theorizing that they were the result of being struck by a bolt of lightning while manipulating the Atmospheric Moisture Freezing Device, with his cells gaining the ability to emit liquid nitrogen. He began to use his powers to freeze the HYDRA operatives tasked with capturing him and was able to freeze the water surrounding a large cargo ship to prevent it from leaving the port.

Abilities
Expert Engineer: Gill has a degree in engineering. He uses this talent in order to rebuild machines; he built a copy of the Atmospheric Moisture Freezing Device, originally built by Leo Fitz and easily rebuilt Elias' radio that Elias thought was beyond repair. He was even able to invent such interesting items as an Ionized Air Cannon or a larger version of the Freezing Device.