The Frog Expert used to spend his time researching the frog that lives in the Guardians Lagoon. Unfortunately for him he got into an accident with the Poisonous Frog and had his vision impaired. He can no longer study the animals that live in Guardians Lagoon, but he wants to get revenge for what the frog did to him. Bring the Frog Expert the items he needs for his revenge and he will share his plans with you to develop a Poisonous Frog Egg Staff.