lloyd: a scar across his right eye from ep 83 that never properly healed and an arrow scar on his left arm.
Kai: the scar across his left eye, and a burn on his left wrist from when he was trying to cook, and a cut across his right arm from aspheera yeeting him.
Nya: a burn on her waist from fighting garmadon, a cut on her neck from falling from a tree when she was little, and a cut on her left shoulder from harumi
zane: he doesn't have any scars due to constantly repairing himself.
cole: stitches across his right leg from the fall
jay: the scar on his eyebrow, a cut on his cheek from a bully in high school
