Daniel LaRusso is a fictional character from the Karate Kid film series, created by Robert Mark Kamen. He is portrayed by actor Ralph Macchio. Daniel is a teenager who learns karate to defend himself against bullies and to gain confidence. He is trained by Mr. Miyagi, a wise and skilled martial artist. Throughout the series, Daniel faces various challenges, including rivalries and personal growth. His journey emphasizes themes of perseverance, friendship, and the importance of mentorship. The character has become iconic in popular culture, representing the classic underdog story in martial arts cinema.