Kuromi is a Sanrio character introduced in 2005 as part of the 'bad girl' collection. She is the mischievous rival to Hello Kitty, sporting a black jester's hat adorned with a pink skull, embodying an edgier, punk persona. Despite her rebellious and tough exterior, she has a heart full of dreams and adores writing poetry. Kuromi channels rebellion and fun, contrasting Hello Kitty's sweetness, and represents individuality within Japan's kawaii culture. She brings an edge to friendships with characters like My Melody and Hello Kitty.