Sergeant Samuel Roderick

Sergeant Samuel "Sam" Roderick, also known as Mr. Sharky, is the main villain from the animated TV series SpongeBob SquarePants episode "Mrs. Puff, You're Fired". He was voiced by the late English actor Robin Sachs.

Biography
After Mrs. Puff (Mary Jo Catlett) was fired for failing to teach Spongebob how to drive so many times by Mr. Fitz (Dee Bradley Baker), she was replaced by Roderick.

He was very strict, making SpongeBob learn every inch of a difficult driving course, first by crawling and then by walking and finally by running through it whilst blindfolded. Soon Spongebob could complete the course while driving blindfolded.

When it came to Spongebob's test for his license he attempted to put on his blindfold, but was told not to. But Spongebob never learned how to drive without his eyes closed and was soon out of control. Roderick tried to stop the boat, but was run over.

Spongebob failed his test and Mrs. Puff was hired again. It was never shown what happened to Roderick afterwards, but it is presumed that he is dead.

Trivia

 * Before Robin Sachs was cast, Alan Rickman, Richard Griffiths, and Jason Isaacs were considered to voiced Sergeant Roderick.