Joshua Elijah Bullock, professionally known as defnotplanet5 (or simply 5), is an American rapper, singer, songwriter, and record producer from Michigan. He began releasing music independently in 2024 and has since become known for his melodic approach to hip-hop, incorporating elements of alternative music, emo rap, and pop into his work. His lyrics frequently explore themes of mental health, relationships, self-reflection, and personal growth, with each project marking a distinct stage in his artistic development.