Streak values his ambition the most. He is slightly more introverted, caring, quiet, and sarcastic in conversations. He lets his heart guide him, often being very passionate and hot-headed. His world view is mostly pessimistic. He is confident, self-critical, curious, intense, questioning, apathetic and unprincipled. Streak is wise, which reflects in his decisions, skills, and conversations. He thinks that even if ice-chill is dangerous, it's beautiful, when everything is shrouded in snow and frost. Streak's opinions are easily swayed, but he speaks them often.
Streak was born to his father Coal and mother Holly alongside his brother Flash and sister Brave. Streak constantly argued with Flash, while Brave bullied him. Coal was uninvolved, while Holly was unsympathetic. Streak wasn't close to any of his family. Holly and Coal abandoned him when they decided he was old enough to care for himself. Quartz and Panda found him and took him in, and Streak became close with Smoke, Chase, and Chestnut.
After Panda and Quartz's death, Streak trained to be a chaser in Pepper's pack alongside Smoke and Chestnut.