|Voiced by||Trey Parker and Matt Stone|
|First Appearance||Lil' Crime Stoppers|
While poor, white trash kids play detective or laundromat in their basements, the wealthier kids in town get to play cool FBI agents, because their parents can afford the more expensive toys. No junior detective agency in South Park is outside Agents Tucker, McDonnell, and Mitchell's jurisdiction, and they will take over your case if they can - after all, chances are, they out-rank you. It's totally fair. Is so.
- "All right, let's do this by the books! McDonnell, give me smears of all the places the doll used to be! Mitchell, run a tap on the phone!" - Agent Tucker (Lil' Crime Stoppers)
- Lil' Crime Stoppers (s07e06)
- While there are no recurring kids known by the names of McDonnell or Mitchell, Craig Tucker has been known to act as an antagonist to the boys in some episodes. Their voices differ significantly however.