Former ET host Mary Hart is showing viewers a side of her no one has ever seen on Baby Daddy.

As one of America's sweethearts in real life, Hart has earned a reputation for upholding the utmost professionalism at all times, but on the Freeform sitcom, a fictionalized version of the TV icon has a serious anger management issue.

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"They have created this exaggerated version of me who is really not nice, and who is really a control freak," Hart told ET. "And she's a mean one at that!"

Thinking Tucker (Tahj Mowry) needs to stand up for himself with his boss Mary Hart, Ben (Jean-Luc Bilodeau) films Mary berating Tucker to show how badly he's being treated. When little Emma (Kayleigh Harris/ Sura Harris) accidentally uploads the video online, Mary and Tucker become a viral sensation, leaving Tucker in an even worse spot.

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"Tahj, I'm really sorry I am taking it all out on you," Hart told the actor behind the scenes. "Thirty years of wanting to vent, finally I do," she joked.

Baby Daddy airs Wednesdays at 8:30 p.m. ET/PT on Freeform.