Former contestants from The Apprentice publicly denounced Donald Trump at a press conference on Friday.
Kwame Jackson, the runner up from season one, joined forces with season four winner Dr. Randal Pinkett.
Jackson told IE that he is "here to stop this chorus call of Trump," who he said appealed to "America's worst fears."
Dr. Pinkett said he does not think Trump is qualified to run the country.
Tara Dowdell, who appeared in season three, told IE: "He is thin skinned and responds with petulant and sophomoric insults, which is not presidential."
Trump fired back: "So sad! They just want to get back into the limelight... They should be careful or I’ll play hours of footage of them individually praising me."
But Jackson called the comments "school yard bully 101."