Which pokemon should I fill in?

[PandaShogun]

I made another team for OU, what do you guys think?

Greninja @ Life Orb
Ability: Protean
EVs: 4 HP / 252 SAtk / 252 Spd
Hasty Nature
- Dark Pulse
- Surf
- U-turn
- Ice Beam

Sableye @ Rocky Helmet
Ability: Prankster
EVs: 252 HP / 252 Def
Bold Nature
- Taunt
- Will-O-Wisp
- Confuse Ray
- Recover

Charizard @ Charizardite Y
Ability: Blaze
EVs: 252 Spd / 252 SAtk / 4 HP
Timid Nature
- Flamethrower
- Solar Beam
- Air Slash
- Dragon Pulse

Weavile @ Life Orb
Ability: Pressure
EVs: 252 Atk / 252 Spd / 4 HP
Jolly Nature
- Ice Punch
- Pursuit
- Fake Out
- Quick Attack

Tyrantrum @ Expert Belt
Ability: Strong Jaw
EVs: 252 Atk / 252 HP / 4 SDef
Careful Nature
- Crunch
- Stealth Rock
- Dragon Tail
- Thunder Fang

Klefki @ Leftovers
Ability: Prankster
EVs: 252 Def / 252 HP / 4 SAtk
Bold Nature
- Thunder Wave
- Substitute
- Calm Mind
- Draining Kiss

 

[PlatinumDude]

I'd drop one of Forretress' hazards in favor of Earthquake or Gyro Ball. It's massive setup bait right now and the only thing significant thing it can do besides hazard stacking and Rapid Spinning is Volt Switching out.

Espeon is supposed to take advantage of its high Speed. Outside of Baton Pass teams, it's best off using Dual Screens. Its HP is too low to use Wish effectively:
-Reflect
-Light Screen
-Psychic/Psyshock
-Hidden Power (Fire)/Baton Pass
Nature: Timid
EVs: 252 HP/4 Def/252 Spe
Item: Light Clay
Ability: Magic Bounce

Vaporeon and Sylveon are better Wish Passers than Espeon because of their high HP:

Vaporeon:
-Wish
-Protect
-Scald
-Ice Beam/Toxic/Roar
Nature: Bold
EVs: 248 HP/252 Def/8 Spe
Item: Leftovers
Ability: Water Absorb

Sylveon:
-Wish
-Protect
-Moonblast/Hyper Voice (latter to be used with Pixilate, former if you can't use Poke Transfer)
-Shadow Ball/Hidden Power (Fire)/Heal Bell
Nature: Bold
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers

Kangaskhanite is banned from OU. Make do with something else, like Mega Lucario or Charizard X:

Mega Lucario:
-Swords Dance
-Close Combat
-Extreme Speed/Bullet Punch
-Crunch/Ice Punch
Nature: Jolly
EVs: 4 HP/252 Atk/252 Spe
Item: Lucarionite

or
-Nasty Plot
-Aura Sphere
-Flash Cannon
-Dark Pulse/Vacuum Wave
Nature: Timid
EVs: 4 HP/252 SAtk/252 Spe
Item: Lucarionite
Ability: Steadfast/Inner Focus

Charizard X:
-Dragon Dance
-Flare Blitz
-Dragon Claw/Outrage
-Roost
Nature: Adamant/Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Charizardite X
Ability: Blaze

Wash Rotom is fine on the team because it helps deal with Talonflame. It's its set that's the problem. Hex isn't worth using because of its low base power and is totally dependent on the opponent being statused.:
-Volt Switch
-Hydro Pump
-Will-o-Wisp
-Pain Split/Rest
Nature: Bold
EVs: 248 HP/252 Def/8 SDef
Item: Leftovers/Chesto Berry

or
-Volt Switch
-Hydro Pump
-Will-o-Wisp
-Pain Split/Hidden Power (Ice)
Nature: Modest
EVs: 232 HP/56 SAtk/220 Spe
Item: Leftovers

 

[PandaShogun]

Thanks again platinum! :D

I made another team for OU, what do you guys think?

Greninja @ Life Orb
Ability: Protean
EVs: 4 HP / 252 SAtk / 252 Spd
Hasty Nature
- Dark Pulse
- Surf
- U-turn
- Ice Beam

Sableye @ Rocky Helmet
Ability: Prankster
EVs: 252 HP / 252 Def
Bold Nature
- Taunt
- Will-O-Wisp
- Confuse Ray
- Recover

Charizard @ Charizardite Y
Ability: Blaze
EVs: 252 Spd / 252 SAtk / 4 HP
Timid Nature
- Flamethrower
- Solar Beam
- Air Slash
- Dragon Pulse

Weavile @ Life Orb
Ability: Pressure
EVs: 252 Atk / 252 Spd / 4 HP
Jolly Nature
- Ice Punch
- Pursuit
- Fake Out
- Quick Attack

Tyrantrum @ Expert Belt
Ability: Strong Jaw
EVs: 252 Atk / 252 HP / 4 SDef
Careful Nature
- Crunch
- Stealth Rock
- Dragon Tail
- Thunder Fang

Klefki @ Leftovers
Ability: Prankster
EVs: 252 Def / 252 HP / 4 SAtk
Bold Nature
- Thunder Wave
- Substitute
- Calm Mind
- Draining Kiss