Lou

Lou is a character who was released with the Level 33 update on August 15th 2013. He is unlocked with the S.W.A.T. Van along with Eddie. He is in the Civil Servants collection.

Simpsons Wiki Description
Lou is an officer of Springfield Police Department and by far, the most intelligent and competent officer of the Springfield Police. He is under the command of  Chief Wiggum, and often takes the time to point out Wiggum 's mistakes (often while a crime—or the pursuit of a criminal—is still in progress)