Norbert Gastell was an Argentinian-born, German voice actor, who specialized in dubbing. He was born to German parents, but grew up in Argentina. He moved to Munich in 1938. Gastell was best known in Germany as the voice of Homer Simpson in the German version of The Simpsons, which he had provided since the series was first aired in 1991. He is also remembered for dubbing the character Trevor Ochmonek in the sitcom ALF, Coach Pantusso in Cheers and Cornelius Fudge in the Harry Potter films. He was also active in radio plays. He died in Munich at the age of 86.

https://en.wikipedia.org/wiki/Norbert_Gastell