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Hidden Machines, abbreviated as HMs and also known as Secret Machines, are items shaped like VCDs or DVDs. In addition to what Technical Machines do — teaching Pokémon certain attacks anytime the player wants, they also grant important functions outside of battles such that players cannot complete the game without them. They have been reusable from the very first day they were introduced, and these attacks cannot be forgotten by normal means. 5 HMs are available in Roria.

Instruction[]

The procedure of using a HM is identical to how a TM is deployed — simply open the bag, click on "TMs/HMs", choose a HM and press "Use". Click on a compatible Pokémon (which will be listed as "Able") to teach that Pokémon the move. Pokémon which cannot learn the attack are listed as "Unable" in red, and Pokémon which have already learnt the attack are listed as "Learned" in blue.

The remaining process is similar to how a Pokémon learns attacks upon levelling up — the Pokémon will have to delete a move to make room if it already possesses 4 moves. However, once learnt, Pokémon cannot forget the move unless taken to the Move Deleter in Colosseum Marketplace. Thus it is not recommended to let the player's main Pokémon learn certain weak HM attacks, such as Cut and Rock Smash.

Each HM also provides an unique field usage. Some are accessed by clicking the required object, such as clicking on a small tree to use Cut, while Fly is used by accessing the Pokémon screen in menu. All HMs can be used as in-battle attacks without any restriction, but field functions are limited such that certain Gym Badges are required to unlock.

List of HMs[]

Available HMs[]

Here is a list of all available HMs. Field usages are in italics.

Type HM Name Power / Category Accuracy PP Additional Effect Location Required Badge
HM Normal
Normal
HM1 Cut 50
Physical Category
95% 30 Cuts down small trees. Route 4 Silvent Gym
Arc Badge

Arc Badge

HM Flying
Flying
HM2 Fly 90
Physical Category
95% 15 2-turn attack. Flies up first, strikes in the next turn.
Allows flying to any visited towns and cities.
Anthian Park, Anthian City Anthian Gym
Soaring Badge

Soaring Badge

HM Fighting
Fighting
HM6 Rock Smash 40
Physical Category
100% 15 50% chance of decreasing opponent's Physical Defense.
Breaks cracked rocks. Wild Pokémon might be encountered.
Aredia Ruins Aredia Gym
Crater Badge

Crater Badge

HM Normal
Normal
HM8 Rock Climb 90
Physical Category
85% 20 20% chance of confusing the target.
Climbs rocky slopes.
Fluoruma City Fluoruma Gym
Harvest Badge

Harvest Badge

HM Water
Water
HM3 Surf 90
Special Category
100% 15 Hits all Pokémon in Double Battles.
Surfs on water. Wild Pokémon can be encountered.
Port Decca Frostveil Gym
Contrast Badge

Contrast Badge

Downgraded HMs[]

Some of the HMs from core series have lost their status and have their field functions disabled in Pokémon Brick Bronze, because the developers deem them to be illogical, unreasonable and unnecessary, or due to the fact that they were already sacked in any main series games prior to Pokémon Sun and Moon.

Type HM Name Power / Category Accuracy PP Additional Effect New Status Location
HM Normal
Normal
HM4 Strength 80
Physical Category
100% 15 Pushes boulders. Following Pokémon Sun and Moon, it has become the Signature Move of Machamp. Machamp learns Strength when evolving.
Reason: Unknown as of now.
HM Normal
Normal
HM5 Flash N/A
Status Category
100% 20 Decreases opponent's accuracy by 1 stage.
Lights up dark caves.
TM Normal
TM70
Ocean's Origin
Reason: Flash already lost its HM status permanently from Pokémon Diamond, Pearl and Platinum onwards, becoming TM70 up to Pokémon Omega Ruby and Alpha Sapphire.
HM Water
Water
HM6/HM5 Whirlpool 35
Special Category
85% 15 Traps and continuously damages opponent for 4 to 5 turns.
Crosses whirlpools.
N/A
Reason: Whirlpool was only a HM twice back in Pokémon Gold, Silver and Crystal, as well as their remakes Pokémon Heart Gold and Soul Silver.
HM Water
Water
HM7/HM5 Waterfall 80
Physical Category
100% 15 20% chance of causing the opponent to flinch.
Climbs waterfalls.
TM Water
TM102
Route 15
Reason: Developers reckon that it is unreasonable for a Pokémon to go up against the great force of falling water while carrying a trainer on its back.
HM Water
Water
HM8/HM6/HM7 Dive 80
Physical Category
100% 10 2-turn attack. Dives underwater first, strikes in the next turn.
Allows diving deep into the sea.
N/A
Reason: Replaced by the Underwater Mining Vessel.
HM Flying
Flying
HM5 Defog N/A
Status Category
Sure Hit 15 Reduces opponent's evasion by 1 stage. Eliminates Reflect, Light Screen, Aurora Veil and all entry hazards.
Clears fog.
N/A
Reason: Defog was only a HM once back in Pokémon Diamond, Pearl and Platinum.

Trivia[]

  • The introduction of Waterfall on Route 15, albeit as TM102 instead of HM5, indicates the first time in the Pokémon World that Waterfall appears before HM3 Surf.
    • This was not possible in any of the core series games prior to Pokémon Sun and Moon, because Surf must be used first before any of the waterfalls can be reached.
    • Even in Pokémon Sun and Moon where all HMs are taken down in favour of Ride Pokémon, the replacements of these 2 moves (TM94 and TM98) were awarded at the same time.
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