Ernie Reyes Jr., an actor and martial artist who played Keno in Teenage Mutant Ninja Turtles II: The Secret of the Ooze, is battling kidney failure and needs a transplant.

The 43-year-old's sister, Destiny Reyes, set up a GoFundMe page last week to help raise money to pay for his treatment and as of Friday afternoon, at least $41,800 has been donated—more than half of the $75,000 goal.

"My brother, Ernie Reyes Jr., was recently in the ICU (Intensive Care Unit) fighting for his life suffering from kidney failure," she wrote. "Ernie is currently undergoing dialysis treatment 3 times per week for 4 hours a day while waiting for a kidney transplant. This is a very challenging time not only for Ernie Jr.'s immediate family, but a challenging time for our family as well."

"Regardless of where you have seen or heard of Ernie Reyes Jr., he has impacted peoples' lives all over the world through his extraordinary performances in television and film," she continued. "Please be aware that he needs support during this time of need and recovery of his life."