One woman who appeared in a video on Mr Dobrik’s channel says she was raped by another person involved during filming.
Mr Dobrik, who has almost 19 million subscribers on the platform, denies any wrongdoing.
But the claim has led brands and investors to "sever ties" with the influencer.
Mr Dobrik rose to fame through prank videos, sometimes in collaboration with a number of other YouTubers called the Vlog Squad.
During the coronavirus pandemic, he stepped back from posting regularly on YouTube, in order to launch his own photo app Dispo.