He's a notorious Amish paramedic who hangs with the wrong crowd. She's a ditzy out-of-work Hell's Angel with an evil twin sister. They fight crime!
He's a jaded misogynist boxer who hides his scarred face behind a mask. She's a cynical cigar-chomping opera singer operating on the wrong side of the law. They fight crime!
He's an uncontrollable native American jungle king on his last day in the job. She's a cosmopolitan kleptomaniac wrestler looking for love in all the wrong places. They fight crime!
He's an underprivileged shark-wrestling werewolf with a mysterious suitcase handcuffed to his arm. She's a strong-willed Bolivian nun who can talk to animals. They fight crime!
He's an unconventional one-eyed rock star with a robot buddy named Sparky. She's a beautiful French-Canadian angel operating on the wrong side of the law. They fight crime!
Some of these sound like future Terry Pratchett novels.