Something along the lines of...

1: Alright Jerry. It looks like we're going to need to use the old good cop, bad cop routine.

...

1: It's not working. We'll have to try the old good cop, Brad cop routine.

...

1: Damn it. Time for the old good cop, dad cop routine.

...

1: Good cop blood clot routine!

...

Good Cop Dad Cop  "I'm not angry. Just disappointed."

Good Cop Bad Crop

Good Cop Sad Cop

Good Cop Mad Cop

Good Cop Fad Cop "Ever tried the Atkins diet? It's a powerful life-time approach to successful weight loss and weight management."

Good Cop Bad Croissant 

Good Cop Bad Carp - "Magicarp used Splash!"

Good Cop Bad Cup

Good Cop Blood Clot "Ah! I have a blood clot!"

Good Cop Bod Cap

God Cop Bad Coop

Good Cop God Cop

Good Cop Lawfully Neutral Cop
Good Cop Dance Cop - has a small song and dance number on how it won't hold up in court/have no alibi
Good Cop Bad Pun Cop -
                                BP Cop:"Looks like we gotcha 'caged in'" (it's supposed to be that bad)

                                Suspect: "This is such a 'cop' out..."
                                BP: *gasps* "It's not working. Time for Plan B!"

Already done:

Good Cop Good Cop

Good Cop Evil Cop

Good Cop (actually) Bad Cop

Good Cop Franklin Delano Roosevelt Cop