Luler's purple carapace becomes more vibrant based on their diet of sea-dwelling plants and Pokémon. Luler have been reported scouring over 50 miles of seafloor in a day in search of food.
It waves its huge, oversized claw in the air to communicate with others. It requires a lot of effort to maintain Luler's vivid coloring, but some collectors enjoy this work and treat it as their hobby.