The series does have non-mecha flying machines, such as the police copters in episode 15.

What bugs me is this card's creature type. I had a big problem in Clockworks Wings with the creature type of the whole police faction such as Candon Chief Inspector; at the time I decided to just live with the political incorrectness of "Policeman" as a gender-neutral creature type, but that's even more jarring these days. I'm using type "Human Citizen" on quite a few cards such as the students, but "citizen" doesn't feel right for police officers. I wondered about "Officer" but that's not great either. Wizards' approach is generally to use type "Soldier", as on Law-Rune Enforcer, but that feels even more wrong in a modern setting like Code Geass where the army and the police are distinctly different. I don't have any good solutions here, but I'd be interested in your thoughts.

I was just thinking that your choice of "enforcer" seemed like a good choice; clearly reminiscent of police but open-ended enough that it could apply to different roles in different sets. Or just use "human police" even though that's not idiomatic in the real world.

Hmm, thanks. Maybe Enforcer is usable then.

Another approach is to just reflavour this as an army copter instead so I can use type Soldier without any thought :)

Oh yeah, that is probably simpler for just one card :) It would still be nice to have "enforcer" available for police in other sets, but introducing a new type may be the responsibility of a set with more than a couple of police features :)