The border patrol officers Charlie, voiced by Matt Stone, and Marcus, voiced by Trey Parker, sit in their guard tower trying to keep immigrants from Mexico from illegally entering the United States. They also are there to prevent Mexicans from crossing the border in the opposite direction, from the United States to Mexico.
While playing Texans vs. Mexicans, Butters, in character as Mantiquilla, inadvertently creates a Mexican revolution, causing Mexicans to abandon their jobs and return to Mexico. This creates a shortage of laborer's causing the border patrol to hire volunteers to keep the Mexicans in the U.S.
Charlie is skinny in stature with brown hair. He is the first to notice the Mexican citizens returning to Mexico.
Marcus is overweight, has dark brown hair, and wears sunglasses. He may be the leader of border outpost. Marcus comes up with the idea of hiring extra guards to keep the Mexicans from returning to their home country.
|Minor Characters from Season Fifteen|
| Broadway Bros | Duck President | Funnybot | Jacob Hallery | Junichi Takiyama | Larry Feegan | Miles Standish | Mr. Adams | Ms. Bronski | Natalie Portman | Secret Society of Cynics | Selena Gomez | Tyler Perry | Underpants Thieves | U.S. Border Patrol | Wayne D | Wikileaks | Mr. and Mrs. Weatherhead | Mr. and Mrs. Whipple|