Ah my most hated enemy in ME.I don't know why but I hate him more than the EM,Saren,the Collectors,Harbringer,Sovereign...and all of them are worse actually.Kai Leng was an interesting and refreshing addition in the ME universe.Good picture btw.
TRIES. And fails. After he's lost his katana after that last swing - he is. So just slap some cuffs on him, destroy the Reapers (or Control/Synthesis if they're your thing) and then see if not-indoctrinated Leng is any more agreeable.