OU
Metagross @ Leftovers/ Expert Belt
Ability: Clear Body
EVs; 196 HP, 252 Atk, 60 Def
Nature: Adamant
- Zen Headbutt
- Ice Punch
- Meteor Mash
- Bullet Punch/ Agility
The Agility set usually sees full EV investment in speed, but I tried it out with my Tank Metagross set, and Agility is actually a really great move. It has base 70 speed, and even with no EV investment, Metagross nearly reaches Jolteon speed (full 252 EV investment) with just one Agility.
Reuniclus @ Life Orb/ Leftovers
Ability: Magic Guard
EVs: 252 HP, 252 Def, 4 Sp. DEf
Nature: Bold
- Calm Mind
- Recover
- Psyshock
- Signal Beam/ Focus Blast
Typical Calm Mind stall, and Magic Guard is the added bonus that Reuinclus won't take damage from weather or status. Psyshock and Signal Beam give pretty much full coverage apart from steel.
T-Tar @ Leftovers/ Chople Berry
Ability: Sand Stream
EVs: 252 HP, 76 Atk, 180 Sp. Def
Nature: Adamant
- Crunch
- Pursuit
- Low Kick
- Fire Blast/ Stealth Rock
At first T-Tar seems to have a poor typing for a tank, but Sand Stream boosts its Sp. Def, meaning most Grass and Water moves will deal less damage to T-Tar in sand (many Grass & Water moves being special). Base 100/ 110/ 100 defences are really something, even in Ubers.
Hippowdon @ Leftovers
Ability: Sand Stream
EVs: 252 HP, 252 Def, 4 Atk
Nature: Impish
- Earthquake
- Slack Off
- Ice Fang
- Stealth Rock/ Whirlwind
Hippowdon already has high attack, so maximum EVs in defences for optimum tanking. Also, Sand Stream will buffet and wear most opponents down, which helps with tanking.
UU
Snorlax @ Leftovers
Ability: Thick Fat
EVs: 144 HP, 188 Def, 176 Sp. Def
Nature: Careful
- Curse
- Body Slam
- Earthquake / Crunch
- Rest
Curselax is a classic mixed tank. With Curse, it's able wall physical hits too (After 1 Curse, Low Kick won't OHKO it).
Bronzong @ Leftovers
Ability: Levitate
EVs: 252 HP, 252 Def, 4 SpD
Nature: Relaxed
- Gyro Ball
- Stealth Rock
- Toxic
- Earthquake
Make no mistake, Bronzong is a tank. It has low offensive capabilities, yes, but it has Gyro Ball, which gives it an offensive presence. Gyro Ball damage is calculated by speed, and Bronzong therefore needs no EV investment in its attacks in order to deal significant damage.
Swampert @ Leftovers
Ability: Torrent
EVs: 240 HP, 252 Atk, 16 Def (Offensive)
OR
EVs: 240 HP, 16 Atk, 252 Def (Defensive)
- Scald/ Waterfall
- Earthquake
- Roar/ Ice Punch
- Stealth Rock/ Roar/ Toxic
Swampert is the classic physical tank. Even without EV investment in attack, it can still hit hard. Scald for defensive set, Waterfall for offensive set.
Ducktank @ Eviolite
Ability: Trace
EVs: 252 HP, 252 Sp. Atk, 4 Def
Nature: Modest
- Recover
- Ice Beam
- Thunderbolt
- Toxic/ Tri Attack
Nananananananana Nananananananana... Duck Tank! Your best buddy from bathroom playtime is back, and with a vengeance.
Suicune @ Leftovers
Ability: Pressure
EVs: 252 HP, 252 Def, 4 Sp. Atk
Nature: Bold
- Calm Mind
- Rest
- Sleep Talk
- Scald
I hate Suicune with a passion (just like how I hate Walrein). It's unbelievably hard to get rid of without a hazer/ phaser.