An aquatic creature, Raiju invokes a Galapagos iguana and Crocodile in appearance and behavior. Broad shouldered, Raiju is heavily armored along its back and head. The "head" itself is a tripartite jaw that encases the creature's bioluminescent head for protection. Its feet are bent, enabling it to swim quicker through the water. Raiju has a long, strong tail that aids in its movement, especially when swimming. The tail is jagged and sharp, adding to its weaponized appearance.