buddy cop

Short definition from Wiktionary

Noun

1. 1
   A film and television genre with plots involving two people of very different and conflicting personalities who are forced to work together to solve a crime and/or defeat criminals, sometimes learning from each other in the process.
2. 2
   A film and television genre with plots involving two people of very different and conflicting personalities who are forced to work together to solve a crime and/or defeat criminals, sometimes learning from each other in the process: One of the two characters.