In Japan, Olaf is voiced by Pierre Taki, who was recently arrested for allegedly using cocaine in violation of Japan's drug control law.
As reported by Kotaku, investigators arrested Taki after receiving a tip the actor had been using cocaine, and although a search of his property and vehicle proved fruitless, a urine test eventually came back positive. It began when authorities were tipped off that Taki was in possession of the substance, prompting them to search the 51 year old's home and vehicle, and then arresting him a few hours later after his urine sample tested positive for cocaine.
Kingdom Hearts 3 Olaf Voice Actor Being Changed by Square EnixWATCH
Anyone who has played Kingdom Hearts III knows that Olaf doesn't have a major role in the game, so it's presumably much easier to change voices in this case.
Kingdom Hearts III is available now for PlayStation 4 and Xbox One. Presumably, the actor they find will be voicing Olaf in both Kingdom Hearts III and Frozen 2. At the moment of publishing, there's been no word of a Nintendo Switch or PC port.