“All of us here at Johnny T-shirt are heartbroken at the loss of our mentor, but more importantly, our friend,” store manager Mary Beth McIntyre said in a statement.
“Chuck always treated everyone he met with kindness and dignity. He was never too busy to help a friend or to listen to an idea.”
Helpingstine, 53, died Thursday after jumping off an I-40 overpass just north of Chapel Hill.
His death was determined to be a suicide, said Orange County medical examiner Vincent Moylan.
Helpingstine opened the Franklin Street shop, which features UNC-themed merchandise, with his brother and other partners in 1983.
McIntyre said Helpingstine will be missed by his employees at both the Franklin Street retail location and the Hillsborough warehouse.
“We will always remember his creativity, his willingness to teach, his excitement, his fairness, his kindness and his infectious sense of humor,” she said.