Luke, known as "Little Wonder" to his parents, is a quiet, caring, very sensitive five-year-old boy guppy. Having always felt exceptionally close to nature, he's constantly talking to plants, playing with bees, and taking care of his butterfly garden. He is a swimming prodigy. His favorite color is gold, and his best friend is Rekaal.
Luke is an African American guppy with indigo hair, olive-green eyes, and a neon green tail with wavy, bright red stripes.