Hello students! My name is Professor Geekbeak, and today, I wish to draw attention to Regirock. While not great in PvE, Regirock can see some use in PvP, particularly in the Ultra League. Grab your notebooks, class is in session. For those who wish to do their research independently, our raw data can be found here. And for those who wish for a simple visual guide, go ahead and take a look at the below visual guide by CaptGoldfish.

Course Schedule

This raid will take place from August 26th to September 8th. It will be preceded by Mega Swampert and Lunala, and coincides with Registeel, Regice, and Mega Gyarados.

Despite being pure Rock, Regirock knows Focus Blast and Zap Cannon, both of which are not Rock moves, so be careful if your Rock counter is weak to Fighting or Electric.

Effectiveness	Types
Double Resist (0.4x)	—
Resist (0.6x)	Normal Flying Poison Fire
Neutral	Rock Bug Ghost Electric Psychic Ice Dragon Dark Fairy
Super Effective (1.6x)	Fighting Ground Steel Water Grass
Double Super Effective (2.6x)	—

Regirock’s moveset includes the following charge moves:

• Stone Edge
• Focus Blast
• Zap Cannon
• Return
• Earthquake

The Dean’s List consists of the top 5 counters to Regirock. As always, the Valedictorian, Salutatorian, and the Third Ranked will have their best moveset alternatives in a table with their rankings and a table detailing their defensive prowess against the charge moves listed above.

Zacian - Crowned Sword A

Best Moveset: Metal Claw / Behemoth Blade

DPS★★★★★

Tank★★★★★

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Quick Move	Charge Move	Efficacy
Metal Claw	Behemoth Blade	100%
Metal Claw	Close Combat	73%
Air Slash	Behemoth Blade	66%
Metal Claw	Play Rough	64%
Metal Claw	Giga Impact	56%
Air Slash	Play Rough	40%

Zamazenta - Crowned Shield A

Best Moveset: Metal Claw / Behemoth Bash

DPS★★★★★

Tank★★★★★

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Quick Move	Charge Move	Efficacy
Metal Claw	Behemoth Bash	100%
Ice Fang	Behemoth Bash	92%
Metal Claw	Close Combat	59%
Metal Claw	Moonblast	44%
Metal Claw	Giga Impact	42%
Ice Fang	Close Combat	42%

Mega Mewtwo X A

Best Moveset: Counter / Focus Blast

DPS★★★★★

Tank★★★★★

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Quick Move	Charge Move	Efficacy
Counter	Focus Blast	100%
Psycho Cut	Focus Blast	91%
Counter	Psystrike	86%
Confusion	Focus Blast	81%
Counter	Psychic	80%
Counter	Shadow Ball	75%

Defensive Grades for Top 3

Boss Move
Zap Cannon	—	—	—
Focus Blast	—	⚔	🛡
Stone Edge	🛡	🛡🛡	🛡

Necrozma - Dusk Mane A

Best Moveset: Metal Claw / Sunsteel Strike

DPS★★★★★

Tank★★★★☆

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Mega Lucario A

Best Moveset: Force Palm / Aura Sphere

DPS★★★★★

Tank★★★★☆

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Also Noteworthy: A: Mega Blaziken

We here at Pokebattler Pokémon Research Institute can’t expect you to have the best counters every time. So, here are some of our other best options, most of which will be easier to find than the members of the Dean’s List.

Primal Groudon A

Best Moveset: Mud Shot / Precipice Blades

DPS★★★★★

Tank★★★★☆

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Primal Kyogre A

Best Moveset: Waterfall / Origin Pulse

DPS★★★★☆

Tank★★★☆☆

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Keldeo A

Best Moveset: Low Kick / Secret Sword

DPS★★★★☆

Tank★★★☆☆

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Shadow Groudon A

Best Moveset: Mud Shot / Precipice Blades

DPS★★★★☆

Tank★★★☆☆

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Mega Metagross A

Best Moveset: Bullet Punch / Meteor Mash

DPS★★★★☆

Tank★★★☆☆

Reliability★☆☆☆☆

3

Trainers
(Lvl 40)

Of course, besides our 10 best counters, there are plenty of Pokémon that also work against Regirock. Here are a few star choices, worthy of praise.

A	Mega Mewtwo YMega SceptileMega GarchompShadow MetagrossMega SwampertShadow KyogreShadow BlazikenMega HeracrossMega LatiosShadow ConkeldurrTerrakionLandorus TherianMega GalladeMega VenusaurMetagrossKartanaNecrozma - Dawn WingsLucarioShadow Landorus

Sometimes, the weather can be your most powerful ally. In certain weather conditions, certain Pokémon on our list excel. The most transformative cases are noted below.

Sunny/Clear

Primal Groudon (2.0)Mega Garchomp (2.2)Mega Sceptile (2.3)

Rainy

Primal Kyogre (2.2)Mega Swampert (2.3)

Cloudy

Mega Blaziken (2.1)Mega Mewtwo Y (2.2)Keldeo (2.2)

Snow

Mega Metagross (2.2)Shadow Metagross (2.3)

Overall, Regirock is a very simple raid. Not many Rock counters are weak to Electric or Fighting, so most of the standard best anti-rock counters are good here. Of course, if you wish to do more research on your box’s best Pokémon for the job, Pokebattler.com itself can be a great help! Speaking of, we have rolled out a new system that will give a discount to our subscriptions, and I have been graciously granted a code! So, for those lucky readers who make it all the way down here, the code is GEEKBEAK20. This code not only supports the owner of Pokebattler, but also me! And, to be honest, in real life, the presidigious Professor Geekbeak is a broke college student, so I would really appreciate the support. Thank you! Remember, the best counter is the one you have powered up and ready to go. I grant extra credit to those who use their best friend bonus and the weather to their advantage. Class dismissed!