Lucy's Milotic (anime)

Lucy's Milotic was the second Pokemon Lucy used during her battle with Ash. Milotic defeated Ash's Donphan with a single Hydro Pump. It also held its own against Ash's Pikachu, enduring Pikachu's electric attacks and causing serious damage to the Electric Pokemon. Eventually Pikachu managed to defeat Milotic by using Thunderbolt on himself to increase his electrical power and then dived straight into Milotic's Twister and defeated it with a spinning Volt Tackle.