Bill Allen

Bill and Fosse are schoolboys in the animated series South Park. They are similar to Beavis and Butt-head, calling things gay then laughing in deep voices.

Appearance
Bill wears a blue shirt similar to Butters except with a white collar. His hair is similar to Terrance's, although it is brown and slightly shorter.

Fosse wears a purple shirt similar to Terrance's, except with many more stripes. His hair is black but stringy, meaning it could be a different color if it was full.

They both have thick eyebrows during the first four seasons, but afterward they have regular ones.

Personalities
Bill and Fosse are bullies, often laughing at things and people. In addition, they think everything is gay; on one occasion Fosse even said "we're gay", which shows his apparent opinions on everything. Due to their seeming stupidity, it appears they did not make it the fourth grade - they are never seen in the fourth grade classroom, but are in the halls, and are only seen in the hallway and playground after the second season.

These two were seen again in "Lil' Crime Stoppers" when the boys discovered they stole the doll of Sarah Peterson. They then played along and were "shot" in the game; however, they were just playing a game and didn't die.

Bill and Fosse seem to be some of the more nieve children in the school along with Butters, Jason and Dog Poo. In the episode "Its a Jersey Thing", they were both part of Cartmans group to help capture and lock up Kyle. It seems that unlike most other kids, (Craig, Clyde, Token), who are more aware of Cartmans manipulating methods, these guys still havn't wised up to it and so that is why Cartman would most likely seeked them out for help.

Family
Due to Bill and Fosse's quick phasing out from the series, their families were never officially seen - some believe they may be brothers or relatives of Terrance Mephesto and thus share a relation to Dr. Alphonse Mephesto, while others believe all three boys have different families. In the episode "Damien", two older men are seen in the bar after Jesus storms out, saying "This show's gay" followed by "Yeah, Gay" in the similar style to Bill and Fosse, while also having the same face and clothes but adult bodies. Of course, there are many repetitions of characters in South Park, so this might be another case of its loose continuity, or these men might actually, be Bill and Fosse's fathers, or some other male relatives (e.g., uncles, older cousins, etc.).

Trivia

 * Bill is seen playing on the school's basketball team in Elementary School Musical, one of the few times he appears without Fosse.
 * Bill and Fosse are a part of Cartman's entourage to eliminate Kyle in It's a Jersey Thing. Although neither speak, it's arguably their first major appearance since Lil Crime Stoppers.
 * Season 16

Appearances

 * Big Gay Al's Big Gay Boat Ride
 * An Elephant Makes Love to a Pig
 * Pinkeye
 * Damien
 * South Park: Bigger, Longer & Uncut (Cameo)
 * Professor Chaos (Cameo)
 * Red Hot Catholic Love (Cameo)
 * Lil Crime Stoppers
 * Raisins (Cameo)
 * The List (Cameo)
 * Breast Cancer Show Ever (Cameo)
 * Elementary School Musical (Cameo)
 * It's a Jersey Thing