"Arlo the Alligator Boy," a new animated movie, takes place in a vibrant city where a lovable alligator boy embarks on a musical adventure to find his long-lost father, making it the perfect backdrop for your next musical or adventure party!. "Arlo the Alligator Boy," a new animated movie, takes place in a vibrant city where a lovable alligator boy embarks on a musical adventure to find his long-lost father, making it an ideal cartoon background for a musical or adventure theme.