According to a lot of sources steel is the best type to run in Monotype as it has ten resistances and normally high defenses with decent attack
Metagross @ Weakness Policy
Evs : 252 Atk, 252 Def, 4 SpD
Ability : Clear body
Adamant Nature
- Earthquake
- Ice Punch
- Meteor Mash
- Bullet Punch
Weakness policy for a stat boost should someone make the grave mistake of hitting him with a super-effective move doubling his attack while allowing him to hit hard back with either earthquake or ice punch boosted by the boost from weakness policy
Corviknight @ Leftovers
EV's : 4 HP, 252 Def, 252 SpD
Ability : Mirror Armor
Bold Nature
- Body Press
- Iron Defense
- Roost
- Defog
Corviknight is here to cover the ground type weakness of metagross and also clear stealth rock and spikes making hazard setter redundant while healing and then dealing heavy damage right back to them or in other words kindly telling them to take a seat but U-turn will be needed if they have a ghost type.
Melmetal @ Leftovers
EV's : 244 Atk, 252 Def, 12 SpD
Ability : Iron Fist
Adamant Nature
- Iron Defense
- Double iron bash
- Body Press
- Rest
Another iron defense / body press abuser much like corviknight with iron fist hitting ghost types with increased power while breaking sturdy, substitute and focus sash and rest keeping it alive for longer
Aegislash @ Life orb
Evs 252 : Atk, 252 def, 4 SpD
Ability : Stance Change
Adamant Nature
- Shadow Sneak
- Swords dance
- Sacred Sword
- King's Shield
Aegislash is here to do big damage while also protecting themselves at the same time which is his whole purpose, so it is good as a secondary wall
Scizor @ Scizorite
Evs : 252 Atk, 4 SpD, 252 Speed
Ability : Technician
Adamant Nature
- Bullet Punch
- Night Slash
- X-scissor
- Swords Dance
Scizor like Aegislash has a lot to offer as well a good movepool an ability that helps his weaker moves a priority move, a diverse moveset and high damage output to boot
Lucario @ Life Orb
Evs : 252 SpA, 252 Speed, 4 HP
Ability : Justified
Modest Nature
- Aura Sphere
- Dragon Pulse
- Flash Cannon
- Shadow Ball
Lucario is here for More coverage to be able to counter more enemies than i already can, including the infamous ghost type, which is a great thing for him to allow me to do along with Aegislash and Scizor