Biff and Chip Oblong

Biff and Chip Oblong are conjoined 17-year old twins, and students at Hill Valley High.

Personality
Biff and Chip are somewhat similar, with them usually having little to no individuality shown in many episodes. They are shown to be stereotypical teenage boys, with both having a tendency for cruelty, such as bullying Milo and selfishness.

Biff is a hard-working achiever and likes to set goals. Chip describes Biff as "an annoying anal attaboy, but when he puts his mind to something, he rocks". He is more sporty than Chip, as he is part of the wrestling team, has a picture of himself in a football uniform, and took the training in Get Off My Back more seriously than Chip.

Biff is gay but does not realize it yet, having been called a "latent homosexual" by Milo. He is attracted to his coach, but was also shown to be attracted women, such as the the wet t-shirt girl in Flush, Flush, Sweet Helga. The latter may have been an oversight.

Chip is very laid-back and prefers to have fun rather than work. Biff describes Chip as "a goof-off with a Dorothy Hamill haircut, but he has more heart than you ever will". He is also somewhat perverted, seen in how he reads Gigantic Ass Magazine and his statement that he always thinks about nipples. Chip is dating a Valley girl named Courtney.

Appearance
Biff and Chip are conjoined at the hip, and have two arms each, three legs, and three butt cheeks. They wear a plain green shirt with blue pants, a belt, and wear grey sneakers called "buster browns"''. ''Chip has his brown hair shaved into a bowl cut, while Biff has a blonde mohawk or army haircut.

Quotes
"He's like this burnout at school, Crackhead Lenny. Yeah, what a total wastoid. He steals tools from shop, never eats, he's all sweaty and jittery... Can he sleep over this weekend?"

- Milo Interrupted

"Do you have to wear that hat, dad? You look like a Robin Hood Pez dispenser."

- Bucketheads

"I prefer to stay focused on the manliness of sports. Coach always says, heart, obedience, motivation, opportunity. H-O-M-O."

- The Golden Child

"Are you saying I'll be joined to another person for the rest of my life?! We'll be freaks!"

- Get Off My Back

Trivia

 * Chip is allergic to strawberries.
 * Biff is on the Hill Valley wrestling team.
 * Chip is a metalhead.
 * Biff currently has a tattoo on his butt.
 * Chip is subscribed to a magazine called "Gigantic Ass Magazine".
 * They share one stomach and colon between the both of them.
 * They are both able to put themselves into a trance, as shown in Get Off My Back. This is mainly used to give each other privacy.