Charles Finster's art is characterized by vibrant colors and whimsical themes, often reflecting his deep connection to nature and spirituality. His works frequently feature elements of folk art and outsider art, showcasing a unique perspective that blends imagination with personal experiences. Finster is best known for his intricate paintings and sculptures, which often include religious symbols and narratives. His art is influenced by his upbringing in the Appalachian Mountains and his experiences as a self-taught artist, making his creations both accessible and profound, appealing to a wide audience.