He arguably has one of the saddest backstory In warriors. I mean goose feather scared him into breaking his jaw, his mom then hated him everyone rejected him and it went on from that
"Crookedstar – Born Stormkit, Crookedstar's jaw was broken when he smashed his jaw against the stepping stones while crossing the river back from Sunning Rocks. Following the event, his mother Rainflower scornfully renamed him Crookedkit." -wiki