Red: It uses its powerful tail in battle to smash, constrict, then break the prey's bones.Yellow: Its steel-like hide adds to its powerful tackle. Its horns are so hard, they can pierce a diamond.Gold: It swings its big tail around during battle. If its foe flinches, it will charge with its sturdy body.
Prof. Lotus' Notes: The name is a portmanteau of the Japanese borrowed word for Needle - ニドル (Nedoru), cnidocyte (thing in all poisonous animals) and rhino.