Gerald Johanssen is a fictional character from the animated television series Hey Arnold!. He is known for his distinctive tall hairstyle, which resembles a flat top, and his laid-back personality. Gerald is one of Arnold's best friends and often provides support and advice throughout their adventures in the city of Hillwood. In the series, Gerald is portrayed as confident and cool, often serving as a voice of reason among his peers. He enjoys playing basketball and is known for his loyalty to his friends. Gerald's character adds depth to the show's themes of friendship and growing up.