Has anyone met him?

No.
Nobody has met him. He's just a fictional character.

It's just a helpful organization that adds his name to the list of actors in movies they try to help us avoid watching.

With the help of this organization we can avoid all these awful movies that we might have watched if the name hasn't been in the list of actors.

So remember; if the name Galsfksnisasa (or similar weird combination of letters..) is listed among the actors - avoid the movie.

No need to thank me. :o)