Pendergrast took to Instagram on Monday after girlfriend Heather Yerrid gave birth to daughter Layla Rae and son Logan Joseph in December.
"Our beautiful twins, Layla Rae and Logan Joseph arrived on December 10th and we couldn't be more tired and happy!" he captioned a photo with his family.
Entertainment Tonight reported Layla and Logan spent 47 days in the neonatal intensive care unit after arriving two months early.
Pendergrast said in his post that he kept the news quiet until the pair were healthy.
"It was hard keeping this in the dark for so long. The birth of our twins was something we chose not to share with everyone until they came home from the NICU happy and healthy," he explained.
"I appreciate my friends and family for supporting me through this experience."
Pendergrast and Yerrid couldn't help but gush about their daughter and son in a statement to People.
"We are in awe of the twins," the couple said. "This entire experience has been surreal. If you would have asked either of us if this is what we thought life would look like in a year, we would have laughed."
Copyright 2018 United Press International, Inc. (UPI). Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.