1) Agent who takes candy 2) Antidrug cop 3) Bust maker 4) Buster 5) Cop in a sting 6) DEA activity prefix 7) Dea agent 8) Drug agent 9) Drug buster 10) Drug cop 11) Drug cop slangily 12) Drug enforcer 13) Drug lawman 14) Drug prefix 15) Drug trafficker 16) Drug-related prefix 17) Horse collarer 18) Literally, numbness 
Narco is American slang for a narcotics agent.