Hikari "Kari" Kamiya, known as Hikari Yagami (八神 ヒカリ, Yagami Hikari?) in Japan, is a fictional character in the anime and manga series Digimon Adventure and Digimon Adventure 02. She is usually called "Kari" in the English versions. Hikari means light in Japanese and she bears the Crest of Light and the Digi-egg of Light.

She is partnered to Gatomon and is the younger sister of Taichi "Tai" Kamiya. Kari, by nature, is kind and sweet-hearted, looking for the best in people and avoiding fights when possible. However, she can be serious, especially in dangerous or difficult situations, and has a dark side that is used by her enemies. Lara Jill Miller provides her voice in the English dub of the series and Kae Araki does her voice in the Japanese version.

Source: Wikipedia