Shellshocker was sent out when Neesha sent out all her Pokémon to have some free time. Shellshocker then battled against Blastoisetwo and used Hydro Pump. Blastoisetwo, however used Rapid Spin and easily knocked out Shellshocker. Mewtwo then captured Shellshocker with the use of Mewtwo Ball. Shellshocker was later freed by Ash, who destroyed the machine.
|Hydro Pump||water||MS001: Pokémon The First Movie - Mewtwo Strikes Back|