Decided to put this in the beginning of the books, I figured this would help. I'll update this for the story it's in.
Amanda
Age: 23
Appearance: Long dark brown hair that reaches to her waist, sky blue eye, soft ivory skin
Element: Wind
Ninja attire: a one sleeve grey shirt with a blue ribbon on the collar, golden shoulder armor, black legging like pants, black sneakers, a grey half mask, and black fingerless gloves going halfway up her arms
Weapon: bow and arrow
Description: Amanda is the silver ninja of wind, and one of Sensei Wu's first students. She is a caring person, with a motherly attitude, but can be fierce and scary when it calls upon. she wants all of her teammates to be happy and safe, and she cares of each and every one of them.
Wu took her in when she was 5 years old, after a breed of serpentine killed her parents. She lived alone in the streets of Ninjago City until Wu took her in, and raised her as his own. Lately, Amanda is noticing strange powers, and she wants to find out what they are.
Sarah
Age: 20
Appearance: long orange hair mostly kept in a pony tail, brown eyes, faint freckles on her cheeks, satin sand skin
Element: Life
Ninja attire: an orange sleeveless tank top with the collar halfway up her neck, a yellow ribbon around it, golden shoulder armor, black legging like pants, black sneakers, an orange half mask, and black fingerless gloves ending a few inches from her shoulders
Weapon: fists
Description: Sarah is the orange ninja of life, and is a tough girl, who knows how to bring someone to their knees, and if possible, lower. She fights well and does care about the team, but she often goes into battle head first and is always ready for a fight.
She joined Wu's team after he found her at a training camp, where people went to get stronger. She was there after a traumatic romantic experience made her leave home and come here. She has a mother, a father, and an Aunt living somewhere in Ninjago City, along with an insanely large family on her father's side livig all across Ninjago.
Kim
Age: 19
Appearance: long bright blonde hair down to the bottom of her backside, jade eyes, porcelain doll skin
Element: Light/Sunlight
Ninja attire: a yellow shirt with silver shoulder armor and chest plate, a gold ribbon around the collar, black legging like pants, black sneakers, a yellow half mask, and black fingerless gloves ending at her wrists
Regular attire: a yellow short sleeve sundress with whiter frill sleeves and white sandals
Weapons: sword
Description: Kim is the yellow ninja of light. She is a quiet girl, who is knowledgeable in many subjects, especially medicine. she cares for everyone, but is very timid and shy. She speaks in a quiet voice, but she is a good fighter.
She joined the team not long after Sarah. She was staying in a village after hers was destroyed. So far she is the only one of her people. She is friends with a woman named Angela, who grew up beside her. She is part of a village who believed the sun was a person as an angel.
Ashlynn
Age: 19
Appearance: long black hair to the back of her knees, a dragon tattoo on her left arm, silvery eyes, butter cream skin
Regular attire: a black tank top with grey capris and sneaker
Dragon form: a solid black dragon (now about the size of two buses), red eyes, black horns, white teeth and claws
Description: Ashlynn is a spirited and fun young woman, who is up for a challenge. she likes to help when people need it and is often fascinated by what the others can do. She has been training with the other dragons and has grown to be an exceptional fighter, proving so by protecting Lloyd several times.
She was left on the steps of the monastery as a baby, a few weeks old. Amanda and Wu raised her, until a month before Wu started getting everyone together, when she was kidnapped by the skeletons, as bait to lure Wu and Amanda. She has found put that she is the last of the Dragon Shifters, a race of people that could turn into dragons. She is the destined protector for the green ninja.
HEAD CANON NINJA AGES:
Kai: 23
Cole: 24
Jay: 19
Zane: (Really old cause he's a nindroid)
Nya: 18
Lloyd: 20