Okay I don't know if you've seen Lego Movie, but basically, the fandom generally depicts Good Cop Bad Cop as having Dissociative Identity Disorder. In my RP with my friend, we've given the dominant personality the name Ian (he wears the shades to signify control), and the secondary personality the name Liam (round glasses). In telling you this, you can draw either of them with her -- if you draw Ian, he tends to be very shy and gets flustered super easily when it comes to her. Liam is better at dealing with romantic feelings, but is incredibly clingy and touchy-feely. Alternatively, you can forego the glasses entirely as it's only to help others know who's fronting and draw whatever you like. I would prefer if his helmet was off, though -- he's usually given short hair with some spikes at the top,
like so (bottom two pictures). If in uniform, his badge would say "GCPD" (since we pulled him into Batman lmao...). More examples in thread. Thank you so much!!