Here are the characters' physical descriptions, in order of appearance. These are to be used for a reference in how I imagine the characters appearing during the story. If you imagine them differently, that's perfectly fine.
Arnold
Height: 5'10"
Build: slim, quite strong but without much visible muscle
Hair: cut short on the sides and left long and unruly on top, creating the illusion of a longer, less football shaped head
Makeup and Piercings: no piercings, but he sometimes uses foundation to cover pimples
Standard Outfit: blue jeans, sneakers, and a brown sweater with a blue plaid button up shirt underneath, the sleeves usually rolled up
Gerald
Height: 6'1"
Build: sleek muscles, slim, healthy, and strong
Hair: box fade, always freshly shaved (similar to a shorter version of the cartoon's haircut)
Makeup and Piercings: pierced lobes
Standard Outfit: stylish black leather jacket, aviator shades, fitted dark blue jeans, muted red sweater, fashionable sneakers
Lila
Height: 5'5"
Build: average, not very fit
Hair: auburn, almost down to her waist when loose. Just about always worn pulled back into a single thick braid
Makeup and Piercings: nothing except chapstick
Standard Outfit: knee length yellow dress with white flower designs, a blue cardigan, white flats
Phoebe
Height: 5'1"
Build: petite and slim with a buxom chest
Hair: cut at shoulder length, and often pulled back with silver barrettes or a headband
Makeup and Piercings: standard lobe piercings, wears mascara and lipgloss
Standard Outfit: a knit blue dress, denim jacket, and black combat boots
Helga
Height: 5'8"
Build: slim and wiry, with subtle curves, is strong due to athletics
Hair: long and wavy, down to the middle of her back. Often pulled back into a pony tail, accentuating her strong cheekbones
Makeup and Piercings: cartilage piercing on her right ear, wears dark eye makeup
Standard Outfit: black jeans, fitted pink tank top, white converse sneakers and a black cropped leather jacket
Rhonda
Height: 5'2" (5'5" when wearing heels)
Build: slim, fit, curvaceous, known to have one of the best figures in school
Hair: long and black, curled glamorously every day
Makeup and Piercings: two piercings on each ear, black eyeliner and red lipstick, loves to wear gold hoop earrings
Standard Outfit: a black dress and bright red heels, with lots of jewelry. Carries a large red purse instead of a backpack
Sid
Height: 5'8"
Build: slim, he isn't very athletic or fit
Hair: shaggy layers trimmed to be styled cleanly but stylishly
Makeup and Piercings: multiple ear piercings, plus a silver eyebrow ring
Standard Outfit: a black leather jacket, tight black jeans, a collared white shirt and his standard white boots. He likes to emulate the 80's gangster look
Stinky
Height: 6'5"
Build: lanky, with a long face and long, gangly limbs
Hair: buzzed short, with a bit of unruly tuft hanging over his forehead
Makeup and Piercings: none
Standard Outfit: beat up blue jeans, a plain green shirt, and old sneakers. His style has not changed much over the years
Feel free to use these descriptions for your own stories or drawings if you want, I have no real claim to them. Hope you enjoyed the story!