If you've played through XY, you've probably met this weird guy who says he has the power to invert the typechart. You fight him and pwn him and his maison sets. The idea was so quirky (gj Game Freak) we've made it into a permanent ladder:
Inverse Battle
+RULES
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Chansey and Avalugg combined make an excellent core (referred to as ChansLugg) since one absorbs high-powered special attacks and the other can stomach just about any physical move. Together they're only weak to Ghost/Ice combos and very few Pokemon can reliably check them by themselves. Chansey provides Wish and cleric support, keeping its partner healthy should something slap it with Toxic, while Avalugg spins hazards with ease thanks to a resistance to Stealth Rock.
Just like its counterpart in standard OU, Greninja in Inverse is extremely versatile and deadly. Protean is a fantastic ability, not only for gaining STAB on any attack, but also for screwing over the opponent who thinks their move will hit super-effectively, only to find out Greninja has changed types and the move only grazes it for minimal damage. With access to lots of coverage, Greninja can reliably break Avalugg (Ice Beam) and slow down Chansey (Taunt, Gunk Shot). Grass Knot is very useful too, since Grass is a solid attacking type in Inverse.
+VIABILITY RANKINGS
Inverse Battle
+RULES
- The effectiveness of each attack is inverted. (Typechart)
- SE X4 becomes NVE X.25
- SE X2 becomes NVE X.5
- Neutral stays the same
- NVE X.5 becomes SE X2
- NVE X.25 becomes SE X4
- Immunity X0 becomes SE X2
- Ability/item immunities stay the same.
- Standard OU banlist
- Plus: Kyurem-Black, Snorlax, Diggersby, Serperior
- Minus: Genesect, Aegislash, Mega Mawile, Mega Lucario, Dialga, Giratina, Greninja, Landorus-I
- Standard clauses
- Sleep, OHKO, Species, Evasion, Moody, Swagger, Endless Battle, and Baton Pass


Chansey and Avalugg combined make an excellent core (referred to as ChansLugg) since one absorbs high-powered special attacks and the other can stomach just about any physical move. Together they're only weak to Ghost/Ice combos and very few Pokemon can reliably check them by themselves. Chansey provides Wish and cleric support, keeping its partner healthy should something slap it with Toxic, while Avalugg spins hazards with ease thanks to a resistance to Stealth Rock.

Just like its counterpart in standard OU, Greninja in Inverse is extremely versatile and deadly. Protean is a fantastic ability, not only for gaining STAB on any attack, but also for screwing over the opponent who thinks their move will hit super-effectively, only to find out Greninja has changed types and the move only grazes it for minimal damage. With access to lots of coverage, Greninja can reliably break Avalugg (Ice Beam) and slow down Chansey (Taunt, Gunk Shot). Grass Knot is very useful too, since Grass is a solid attacking type in Inverse.
+VIABILITY RANKINGS
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