Lamprey

It lives in the lakes of the Desert Oasis and the Thunderstorm Valley. It has no jaw means it will jump on a prey or enemy and adheres on it to grate the skin. It drains the life of its victim. It attacks in groups of 3-4. You have to "roll" to get it off. It can produce currents by charging on you. The weakness is dragon, then ice. It's the juvenile form of the Lamprey (Boss).