Mr. Slate is a character on The Flintstones.
About Mr. Slate
He is Fred's hot tempered boss at the stone quarry. Though he is friends with Fred and Barney, he is often not impressed with Fred's antics at the quarry, and has fired him on many occasions, only to give him his job back at the end.
- A running gag is his ever-changing first name, which has been presented as Sylvester, Nate, Oscar and George.