Marcelo Sandoval is a fictional character from the animated film series The Loud House. He is known for his cheerful personality and love for music. Marcelo often plays the guitar and enjoys spending time with his friends and family, showcasing his creative side. In the series, Marcelo is depicted as a supportive and loyal friend. He often encourages others to pursue their passions and dreams. His character adds a positive dynamic to the show, highlighting themes of friendship and self-expression among the diverse cast of characters in The Loud House.