Rainier Wolfcastle is a character consisting of a popular Springfield movie star. With a load of muscles and a generally buff body, he often appears in action movies, of almost any kind.
Rainier is said to be a parody of Arnold Schwartzenegger. As said, he has appeared in several movies, most notably the McBain series which he is recognized in the Simpson world the most as. Most of his movies have also failed miserably. He is of Austrian descent, with a strong country accent to follow it. He is also quite involved in politics.
Living the celebrity life, he's done many celebrity-related things such as being a spokesperson for different products, presenting the Academy Awards, and even had his own talk show for a while. In the episode The Bart Wants What It Wants, his daughter Greta goes out with Bart Simpson for a while, before she got dumped by Bart and went with Milhouse afterwards.
 Voiced By
Rainier: (in a movie, playing a threatened musclebound geek) The geeks shall inherit the earth.