|1st appearance:||Tag-Sale -- You're It!|
|Voice Artist:||James Urbaniak|
Mister 12 was one of the rookie Secret Service agents assigned to work the infamous Venture Compound Tag Sale. He expressed some fear to Mister 7 while at the debriefing and Mister 1 unleashed on him, almost forcing him to wear a dress. Thanks to Brock that didn't happen. Mister 7 appears to be his partner as the two are often seen guarding the same post.