Only certain species in Pokemon Sword and Shield can Gigantamax, which not only enhances its size like Dynamaxing, but changes its appearance entirely, too.

Keep in mind only certain individual Pokemon can achieve Gigantamaxing.
Click through the slideshow above to see screenshots of every Gigantamax Pokemon in action.
Gigantamax Snorlax G-Max Move: G-Max Replenish[edit]
When Snorlax is Gigantamaxed, its Normal-type attacks will be transformed into G-Max Replenish. G-Max Replenish doesnt merely deal damage to targetsit can also restore any Berries that Gigantamax Snorlaxs allies have eaten during the battle!
How to Get Gigantamax Snorlax[edit]
Gigantamax Snorlax can be encountered in Max Raid Battles. During December 2019, Gigantamax Snorlax is more likely to spawn if you connect your Nintendo Switch to the internet.
Gigantamax Charizard G-Max Move: G-Max Wildfire[edit]
All Fire-type attacks used by a Gigantamax Charizard automatically change into G-Max Wildfire. This Fire-type attack doesn’t do damage on a hit, but damages all Pokemon that aren’t a Fire type over time for four turns.
See How to Get Gigantamax Charizard for more details because there’s an easy, surefire way to get it after beating the game. You can get them through Max Raid Battles.
Gigantamax Pikachu G-Max Move: Volt Crash[edit]
All Electric-type moves used by a Gigantamax Pikachu automatically change into G-Max Volt Crash. This Electric-type attack damages and is guaranteed to Paralyze all opponents. This move will even Paralyze Ground-type Pokemon!
How to Get Gigantamax Pikachu[edit]
Gigantamax Pikachu can only be obtained as an Event Pokemon, specifically by having Pokemon Let’s Go Pikachu save data on your Nintendo Switch. See How to Get Gigantamax Pikachu and Gigantamax Eevee for more details.
Gigantamax Eevee G-Max Move: G-Max Cuddle[edit]
All Normal-type attacks used by a Gigantamax Eevee automatically change into G-Max Cuddle. This Normal-type attack damages the opponent and infatuates Pokemon of the opposite gender.
How to Get Gigantamax Eevee[edit]
Gigantamax Eevee can only be obtained as an Event Pokemon, specifically by having Pokemon Let’s Go Eevee save data on your Nintendo Switch. See How to Get Gigantamax Pikachu and Gigantamax Eevee for more details.
Gigantamax Butterfree G-Max Move: G-Max Befuddle[edit]
All Bug-type attacks used by a Gigantamax Butterfree automatically change into G-Max Befuddle. This Bug-type attack damages the opponents and causes them all to become paralyzed, poisoned, or asleep.
You can find Gigantamax Butterfree through Max Raid Battles.
Gigantamax Meowth[edit]
Gigantamax Meowth G-Max Move: G-Max Gold Rush[edit]
All Normal-type attacks used by a Gigantamax Meowth automatically change into ‘G-Max Gold Rush. This Normal-type attack damages opponents and scatters gold coins, rewarding in-game money after battle just like Payday, but on a hugely more massive scale.
How to Get Gigantamax Meowth[edit]
Gigantamax Meowth can only be obtained as an Event Pokemon before January 15, 2020.
Gigantamax Corviknight G-Max Move: G-Max Wind Rage[edit]
All Flying-type attacks used by a Gigantamax Corviknight automatically change into ‘G-Max Wind Rage. This Flying-type attack damages the opponent and removes effects life any Terrain, Spikes, Reflect, Light Screen, etc.
You can find Gigantamax Corviknight through Max Raid Battles.
Gigantamax Alcremie G-Max Move: G-Max Finale[edit]
All Fairy-type attacks used by a Gigantamax Alcremie automatically change into ‘G-Max Finale. This Fairy-type attack deals damage to an opponent while simultaneously healing all ally Pokemon on Alcremie’s side of the field.
You can find Gigantamax Alcremie through Max Raid Battles.
Gigantamax Drednaw G-Max Move: G-Max Stonesurge[edit]
All Water-type moves used by a Gigantamax Drednaw automatically change into ‘G-Max Stonesurge. This Water-type attack deals damage to an opponent and produces sharp rocks that work as a battlefield hazard which deals damage to any Pokemon entering the field.
How to Get Gigantamax Drednaw[edit]
You can find Gigantamax Drednaw through Max Raid Battles.
Gigantamax Machamp G-Max Move: G-Max Chi Strike[edit]
When Machamo is Gigantamaxed, its Fighting-type attacks will be transformed into G-Max Chi Strike. This move raises the chance of critical hits for Machamp and its allies.
How to Get Gigantamax Machamp[edit]
You can find Gigantamax Machamp through Max Raid Battles.
Gigantamax Gengar G-Max Move: G-Max Terror[edit]
This move prevents opponents from escaping.
How to Get Gigantamax Gengar[edit]
You can find Gigantamax Gengar through Max Raid Battles.
Gigantamax Toxtricity G-Max Move: G-Max Stun Shock[edit]
When Toxtricity is Gigantamaxed, its Electric-type attacks will be transformed into G-Max Stun Shock. This move poisons or paralyzes opponents.
You can find Gigantamax Toxtricity through Max Raid Battles.
Gigantamax Melmetal[edit]
Gigantamax Melmetal G-Max Move: G-Max Meltdown[edit]
When Melmetal is Gigantamaxed, its Steel-type attacks will be transformed into G-Max Meltdown. This move makes opponents incapable of using the same move twice in a row.
How to Get Gigantamax Melmetal[edit]
You can find Gigantamax Melmetal through Max Raid Battles.
Gigantamax Coalossal G-Max Move: G-Max Volcalith[edit]
This move continues to deal damage to opponents for four turns.
You can find Gigantamax Coalossal through Max Raid Battles.
Gigantamax Sandaconda G-Max Move: G-Max Sandblast[edit]
This move traps opponents in a sandstorm for four to five turns.
You can find Gigantamax Sandaconda through Max Raid Battles.
Gigantamax Centiskorch G-Max Move: G-Max Centriferno[edit]
This move traps opponents in flames for four to five turns!
You can find Gigantamax Centiskorch through Max Raid Battles.
Gigantamax Grimmsnarl G-Max Move: G-Max Snooze[edit]
This move causes the opponent to fall asleep at the end of the next turn.
You can find Gigantamax Grimmsnarl through Max Raid Battles.
Gigantamax Hatterene G-Max Move: G-Max Smite[edit]
This move confuses opponents.
You can find Gigantamax Hatterene through Max Raid Battles.
Gigantamax Copperajah G-Max Move: G-Max Steelsurge[edit]
This move scatters sharp spikes around the field.
You can find Gigantamax Copperajah through Max Raid Battles.
Gigantamax Duraludo G-Max Move: G-Max Depletion[edit]
This move reduces the PP of opponents’ moves by 2!
How to Get Gigantamax Duraludo[edit]
You can find Gigantamax Duraludo through Max Raid Battles.
Gigantamax Flapple / Appletun G-Max Move: G-Max Tartness or G-Max Sweetness[edit]
G-Max Tartness (Flapple) reduces the evasiveness of opponents. G-Max Sweetness (Appletun) heals the status conditions of Appletun and its allies.
You can find Gigantamax Flapple / Appletun through Max Raid Battles.
Gigantamax Orbeetle G-Max Move: G-Max Gravitas[edit]
This move increases gravity for five turns.
You can find Gigantamax Orbeetle through Max Raid Battles.
Gigantamax Garbodor G-Max Move: G-Max Malodor[edit]
This move poisons opponents.
You can find Gigantamax Garbodor through Max Raid Battles.
Gigantamax Kingler G-Max Move: G-Max Foam Burst[edit]
This move harshly lowers the Speed of opponents.
How to Get Gigantamax Kingler[edit]
You can find Gigantamax Kingler through Max Raid Battles.
Gigantamax Lapras G-Max Move: G-Max Resonance[edit]
This move reduces incoming damage for five turns.
How to Get Gigantamax Lapras[edit]
You can find Gigantamax Lapras through Max Raid Battles.
Inteleon’s G-Max move is currently unknown.
Your starter will gain a Gigantamax form through an event in the first Pokemon Sword and Shield expansions, The Isle of Armor. Where or when this is done is currently unknown.
Gigantamax Cinderace’s G-Max move hasn’t been revealed.
Your starter will gain a Gigantamax form through an event in the first Pokemon Sword and Shield expansions, The Isle of Armor. Where or when this is done is currently unknown.
Gigantamax Rillaboom’s G-Max move hasn’t been revealed.
Your starter will gain a Gigantamax form through an event in the first Pokemon Sword and Shield expansions, The Isle of Armor. Where or when this is done is currently unknown.
Gigantamax Urshifu[edit]
Gigantamax Urshifu’s appearance changes based on where you have a Single Strike Style (Fighting/Dark) or Rapid Strike Style (Fighting/Water) Urshifu. Their G-Max moves haven’t been revealed.
How to Get Gigantamax Urshifu[edit]
After completing unknown requrements in The Isle of Armor expansion, you’ll be able to evolve the legendary Pokemon Kubfu into Urshifu. It can then Gigantamax. The form it takes while Gigantamaxed depends on the form you chose for Ushifu.
Gigantamax Venusaur[edit]
How to Get Gigantamax Venusaur[edit]
Currently unknown.
Gigantamax Blastoise[edit]
How to Get Gigantamax Blastoise[edit]
Currently Unknown