SP Zero, or Si Mitchell, is a British illustrator, graphic designer, and street artist based in Bristol, UK. Known for his distinctive and colorful character-based artworks, he has become a well-respected figure in the UK's street art scene. His work features a mix of various styles and influences, including comic book art, cartoons, and graffiti, which he uses to create bold, vibrant, and energetic pieces. SP Zero has collaborated with numerous brands, festivals, and other artists, and his work can be found on walls, canvases, and various products. He has been commissioned by companies like Red Bull, Greenpeace, and The London Police, as well as participating in various street art festivals and events across the UK and Europe. His art often delivers positive messages and is recognized for its ability to engage and connect with a wide audience, making it a popular choice for public and private commissions.