Far from Finished. Little by little....
Empoleon might be called un-useful, and obsolete. I agree in some way, because its "best" set, the sub-petaya late-game sweeper, isn't as threatening in 5th gen as it was in 4th. It even fell from his OU position to UU this generation. In the long run, it might just not be as effective as before in Standard, because it won't be able to endure the battle's pace and duration...
Except this is not standard.
Sporting 11 resistances, 1 inmunity and only 3 weaknesses; Very good defenses at 84/88/101, and an almost excellent Sp. Attack of Base 111; some support moves and many offensive moves, Empoleon is a very unexpected threat to consider.
Because GBU Battles are really fast-paced, and Empoleon is not the most used Pokémon in the format, it has a unique element of surprise. That would be one of the main points to use the Metallic Penguin.
Summary:
Water/Steel
Abilities:
Torrent: When HP is below 1/3, Water moves get a 1.5x power boost.
DW Ability: Defiant: When stats are lowered, the Pokémon gets a +2 in Atk.
Base Stats:
HP: 84
Atk: 86
Def: 88
Sp. Atk: 111
Sp. Def: 101
Spe: 60
"Usable" Support Moves:
Feather-Dance
Icy Wind
Knock Off
Roar
Stealth Rock*
Swagger
Toxic
Yawn
*=SR might prove not to be useful in GBU battles because of their fast-paced nature.
"Usable" Offensive Moves:
Aqua Jet
Blizzard
Drill Peck*
Earthquake*
Grass Knot
Hidden Power
Hydro Pump
Ice Beam
Rock Slide*
Surf
*=Physical sets might prove not to be useful, because there is hardly any good moment to be setting SD, as you'll be wanting him mostly for taking hits.
Sets:
Singles:
Anti-Lead
Empoleon @Focus Sash
Mild or Rash Nature
[Torrent]
EV's: 148 Atk, 252 Sp. Atk, 108 Speed
-Hydro Pump/Surf
-Aqua Jet
-Ice Beam/Hidden Power Electric/Hidden Power Fire
-Grass Knot/Hidden Power Electric/Hidden Power Fire
Had you ever seen this set in a GBU Single battle? Probably no, because of the low usage Empoleon gets.
Despite being the Tank it is, this set focuses on a fast offense, not on taking hits.
The choice between Hydro Pump and Surf is the classic argument between Accuracy and Power. Surf is 100% accurate, but Hydro Pump is 25 points stronger, but with 20% less Acc.
Aqua Jet is needed for taking out weakened and Activated-Sash ones.
The last two moves are for rounding coverage. HP Elec hits Gyarados and Vaporeon harder than Grass Knot. HP Fire hits Ferrothorn. Ice Beam hits Dragons, and Grass Knot hits Bulky Waters.
Mild/Rash Nature helps with Sash activation, which in turn will activate Torrent, allowing for overpowered water moves.
108 Speed EV's outspeed Min. Speed Base 70's, like Metagross and Politoed. 252 in Sp. Atk is to hit the hardest possible, and the rest goes in Atk to power Aqua Jet up.




Empoleon might be called un-useful, and obsolete. I agree in some way, because its "best" set, the sub-petaya late-game sweeper, isn't as threatening in 5th gen as it was in 4th. It even fell from his OU position to UU this generation. In the long run, it might just not be as effective as before in Standard, because it won't be able to endure the battle's pace and duration...
Except this is not standard.
Sporting 11 resistances, 1 inmunity and only 3 weaknesses; Very good defenses at 84/88/101, and an almost excellent Sp. Attack of Base 111; some support moves and many offensive moves, Empoleon is a very unexpected threat to consider.
Because GBU Battles are really fast-paced, and Empoleon is not the most used Pokémon in the format, it has a unique element of surprise. That would be one of the main points to use the Metallic Penguin.
Summary:
Water/Steel
Abilities:
Torrent: When HP is below 1/3, Water moves get a 1.5x power boost.
DW Ability: Defiant: When stats are lowered, the Pokémon gets a +2 in Atk.
Base Stats:
HP: 84
Atk: 86
Def: 88
Sp. Atk: 111
Sp. Def: 101
Spe: 60
"Usable" Support Moves:
Feather-Dance
Icy Wind
Knock Off
Roar
Stealth Rock*
Swagger
Toxic
Yawn
*=SR might prove not to be useful in GBU battles because of their fast-paced nature.
"Usable" Offensive Moves:
Aqua Jet
Blizzard
Drill Peck*
Earthquake*
Grass Knot
Hidden Power
Hydro Pump
Ice Beam
Rock Slide*
Surf
*=Physical sets might prove not to be useful, because there is hardly any good moment to be setting SD, as you'll be wanting him mostly for taking hits.
Sets:
Singles:
Anti-Lead
Empoleon @Focus Sash
Mild or Rash Nature
[Torrent]
EV's: 148 Atk, 252 Sp. Atk, 108 Speed
-Hydro Pump/Surf
-Aqua Jet
-Ice Beam/Hidden Power Electric/Hidden Power Fire
-Grass Knot/Hidden Power Electric/Hidden Power Fire
Had you ever seen this set in a GBU Single battle? Probably no, because of the low usage Empoleon gets.
Despite being the Tank it is, this set focuses on a fast offense, not on taking hits.
The choice between Hydro Pump and Surf is the classic argument between Accuracy and Power. Surf is 100% accurate, but Hydro Pump is 25 points stronger, but with 20% less Acc.
Aqua Jet is needed for taking out weakened and Activated-Sash ones.
The last two moves are for rounding coverage. HP Elec hits Gyarados and Vaporeon harder than Grass Knot. HP Fire hits Ferrothorn. Ice Beam hits Dragons, and Grass Knot hits Bulky Waters.
Mild/Rash Nature helps with Sash activation, which in turn will activate Torrent, allowing for overpowered water moves.
108 Speed EV's outspeed Min. Speed Base 70's, like Metagross and Politoed. 252 in Sp. Atk is to hit the hardest possible, and the rest goes in Atk to power Aqua Jet up.