The Inverse Battle metagame seems very geared towards offense, so I think we should take a look at potentially good defensive Pokémon.
95 base HP, 184 base Defense, and only one weakness. No brainer.
Celebi looks just as good as in the standard metagame, if not better. It has a lot of weaknesses, but also a lot of resistances. Overall, both Grass and Psychic become more powerful in this metagame, so I'd say it's a great trade for Celebi. 4x resists Bug and x2 resists Ghost, Ice, Dark, and Poison looks just awesome. Also, none of Celebi's weaknesses are 4 times super-effective! And considering that Grass- and Psychic-types are weak to themselves, Celebi doesn't need to worry about a Grass/Psychic type switching into it.
Back in Generation I, Cloyster and Lapras were the true dedicated physical walls. Now that Ice is actually a good defensive typing, they can be back to be dedicated walls. They both resist Grass and Stealth Rock and have good Defense.
Cresselia was already an excellent wall. The difference is that now Psychic is an excellent defensive typing. It resists Bug (SE against 7 types), Ghost (SE against Normal), and Dark (otherwise resisted only by the now Normal-weak Ghost-types). And it only has two weaknesses, one of which is to itself, the other is to a type weak to Stealth Rock.
Give your Cresselia Reflect and Shadow Ball and it should be able to scare off a lot of Normal-types.
Goodra resists Dragon-type attacks and thanks to Sap Sipper is immune to the main weakness of Dragon-types in this metagame: Grass. Not only that, but it can learn an excellent Grass-type attack itself, in the form of Power Whip. Goodra looks a legitimate anti-Dragon in this metagame.
Latias used to be a good defensive Pokémon with a bad defensive typing. Now she's a good defensive Pokémon with an awesome defensive typing. Latias is like an offsprint of Cresselia and Goodra.
Unaware Quagsire is probably going to see a lot of usage. No need to worry about set-up Normal Pokémon with this guy around. Also, 4x Grass resist.
To be honest, Water-types look to me just as good as they are in the standard metagame. Water is the only type that resists Grass without being weak to Poison and while it has 4 weaknesses now as opposed of 2, half these weaknesses are to poor offensive types (Fire and Steel) and the third is to Water itself.
Not only is Grass an excellent offensive type, it's also very good defensively. It resists Bug (SE against 7 types), Ice (the only weakness of Ice itself), and Poison (SE against 5 types). Tangrowth has better physical Defense, which is good since most Normal-type attacks are physical, while Gogoat is also immune to Grass-type attacks.
95 base HP, 184 base Defense, and only one weakness. No brainer.
Celebi looks just as good as in the standard metagame, if not better. It has a lot of weaknesses, but also a lot of resistances. Overall, both Grass and Psychic become more powerful in this metagame, so I'd say it's a great trade for Celebi. 4x resists Bug and x2 resists Ghost, Ice, Dark, and Poison looks just awesome. Also, none of Celebi's weaknesses are 4 times super-effective! And considering that Grass- and Psychic-types are weak to themselves, Celebi doesn't need to worry about a Grass/Psychic type switching into it.
Back in Generation I, Cloyster and Lapras were the true dedicated physical walls. Now that Ice is actually a good defensive typing, they can be back to be dedicated walls. They both resist Grass and Stealth Rock and have good Defense.
Cresselia was already an excellent wall. The difference is that now Psychic is an excellent defensive typing. It resists Bug (SE against 7 types), Ghost (SE against Normal), and Dark (otherwise resisted only by the now Normal-weak Ghost-types). And it only has two weaknesses, one of which is to itself, the other is to a type weak to Stealth Rock.
Give your Cresselia Reflect and Shadow Ball and it should be able to scare off a lot of Normal-types.
Goodra resists Dragon-type attacks and thanks to Sap Sipper is immune to the main weakness of Dragon-types in this metagame: Grass. Not only that, but it can learn an excellent Grass-type attack itself, in the form of Power Whip. Goodra looks a legitimate anti-Dragon in this metagame.
Latias used to be a good defensive Pokémon with a bad defensive typing. Now she's a good defensive Pokémon with an awesome defensive typing. Latias is like an offsprint of Cresselia and Goodra.
Unaware Quagsire is probably going to see a lot of usage. No need to worry about set-up Normal Pokémon with this guy around. Also, 4x Grass resist.
To be honest, Water-types look to me just as good as they are in the standard metagame. Water is the only type that resists Grass without being weak to Poison and while it has 4 weaknesses now as opposed of 2, half these weaknesses are to poor offensive types (Fire and Steel) and the third is to Water itself.
Not only is Grass an excellent offensive type, it's also very good defensively. It resists Bug (SE against 7 types), Ice (the only weakness of Ice itself), and Poison (SE against 5 types). Tangrowth has better physical Defense, which is good since most Normal-type attacks are physical, while Gogoat is also immune to Grass-type attacks.