Empoleon Movesets

Empoleon-the Emperor Pokemon
the three horns that extend from its beak assist in its power. The leader has the biggest horns. It swims as fast as a Jet boat. The edges of its wings are sharp and can slice through drifting ice.

Agility-Modest Nature-Life Orb
Surf/Hydro Pump
Ice Beam
Grass Knot
Agility

For this moveset, Agility lets you move faster than most Pokemon that aren't Scarfed. Ice Beam, Grass Knot, and Surf give perfect type coverage. Surf vs. Hydro Pump is between reliability and power.

Sword Dance-Jolly Nature-Life Orb
Sword Dance
Aqua Jet
Drill Peck
Earthquake/Avalanche

This moveset is perfect for destroying normal Empoleon counters. They switch in expecting a normal special set and BANG you kill them.

Defensive-Calm nature- Leftovers
Surf
Grass Knot
Ice Beam/Stealth Rock
Roar/Yawn/Knock Off

Empoleon's ten resistances are put to good use here. Surf is your reliable attack and Grass Knot lets you take Bulky Waters, too. Ice Beam is for Salamence but Stealth Rock does 25% of his HP. Roar and yawn lets you force out Pokemon like Dragon Dance Kingdra while Knock Off lets you get rid of Life Orbs, Choice Items, and Leftovers.

Choice Specs-Timid Nature-Choice Specs
Surf/Hydro Pump
Ice Beam
Grass Knot
Sleep Talk/Hidden Power Electric

Surf and Hydro Pump are main attacks, Ice Beam and Grass Knot are for the things that resist water Dragon, Grass, and Water. Sleep Talk is for absorbing sleep and Hidden Power Electric lets you kill Gyarados faster.