According to Deadline, actor Nathan Darrow, who plays Frank Underwood's bodyguard on House of Cards, will appear on Gotham as Victor Fries. According to the character description posted by the site:
Victor begins as one of Gotham's preeminent cryogenics engineers. Though ferociously smart and eminently capable in his work, Victor struggles to make meaningful connections with others. The one exception is his wife, Nora, who has tragically fallen ill with a terminal disease. Victor's love for Nora knows no bounds, and as her condition worsens, he goes to extreme measures to figure out a way to freeze her before she dies.
Of course, with the way Gotham plays with the Batman characters, it is unclear how quickly Fries' story will play out. Darrow's part is said to be recurring, so it may take some time before his villainous identity solidifies.