As kids

Brayden at six years old is of average build he has short messy (sometimes spearing spiky) bright blonde hair with bright blue eyes. He usually wears jean shorts with red tennis shoes and a batman shirt.

Sydney at age 9 is of a petite build she has long dirty brown hair that reaches down to her lower back. She usually wears a purple jacket with a white shirt underneath with blue jean shorts with black leggings underneath and black tennis shoes.

Austin at age 11 is of a twig like slender build he has light dirty blonde hair that's in style similar to Demyx's (somehow) he wears a longsleeved white shirt with sleeves being a bright red he wears blue jeans and boots.

At present day

At age 17 Brayden has the same eyes and same hair color and style. But he tends to wear a black and white Monokuma style hoodie with no sleeves, he wears tan colored pants and black tennis shoes with white laces. For his uniform he wears a white tee shirt with with folded cuffed sleeves with a light blue plaid tie, and pants with the same color he also wears black dress shoes.

Xyla at age 16 she has icy blue eyes and bobbed-cut raven black hair that frames her face. She wears a white shirt with a black skirt that has overhalls/suspenders she wears shorts underneath and wears black boots. For the uniform she wears a white tee shirt with with folded cuffed sleeves with a light blue plaid tie, and a skirt of the same pattern and color that reaches just below the knee she also wears black mary-jane shoes with white ankle length socks.

Sydney at age 20 has the same hair color but it is now a bob-cut and she has the same eye color. She wears a black shirt with a crop top long sleeve vest overtop she wears faded jeans and black boots. But not when shes working because working means professional, she works as an electrical engineer.

Austin at age 22 has fluffy but short dirty blonde hair. He wears a white long sleeved button up shirt with a sleeveless black vest over top he also wears black pants and dress shoes. He works as a comic artist and works at a flower shop

Y/N
No matter the age, she's left up to the readers interpretation unless stated otherwise (for like an outfit but that's all) and the uniform is the same as for Xyla