Normal 
Mega Max Battle tier
6-star Gigantamax
70,000 HP, 10:00 on the timer
70,000 HP, 10:00 on the timer
Best Gengar Max Battle Counters
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Swap these in for the Max Phase. Ranked by the damage of one Max Move against Gengar, at Max Move level 3; a Dynamax Pokémon's Max Move takes its Fast Attack's type, while Gigantamax Pokémon and a few others always use their own.
Pokémon
Max Move
Damage
-
1
676G-Max Terror (fixed)
-
2
593G-Max Snooze (fixed)
- 3 545
- 4 543
- 5 540
- 6 526
- 7 526
- 8 519
- 9 517
- 10 515
- 11 513
- 12 492
- 13 488
- 14 481
- 15 481
- 16 481
- 17 471
- 18 463
- 19 454
- 20 452
Keep these in between Max Phases. Ranked by how many Max Phases one trainer reaches with three of the Pokémon before they faint or time runs out, using Max Guard in each Max Phase and dodging targeted attacks.
Pokémon
Moveset
Max Phases
- 1 6.1
- 2 5.2
- 3 4.6
- 4 4.5
- 5 4.3
- 6 4.2
- 7 4.2
- 8 4.2
- 9 4.0
- 10 4.0
- 11 4.0
- 12 3.9
- 13 3.9
- 14 3.9
- 15 3.7
- 16 3.6
- 17 3.6
- 18 3.5
- 19 3.4
- 20 3.4
Simulated at level 40 with no weather, friendship or Max Mushroom, over every pair of moves Gengar can use. Some of how Max Battles work hasn't been measured, so parts of the simulation are educated guesses.