Jack Rivers was a laid-back lifeguard and environmental scientist working at a coastal research facility. One day, while rescuing a group of swimmers during a sudden mudslide, Jack found himself submerged in a mysterious, glowing mud that seemed to pulse with energy. When he emerged, he discovered that he had gained extraordinary powers similar to those of a Quagsire. Embracing his new abilities, Jack became Mudslide, a superhero dedicated to protecting both land and water.