Heatran (quest)

Region

Sinnoh

Difficulty

Hard

Compulsory?

Starting location

Stark Mountain.

Requisites

Have at least 150+ hours of playtime after starting the Sinnoh region for
the first time
Be a Sinnoh Champion
Have only one level 60 or less Pokémon in your party

Rewards
Chance to catch Heatran

The Heatran quest is one out of many additional, not story related Legendary Pokémon quests and is the only way to catch the Legendary Pokémon Heatran. This quest is also the only quest that gives the player an option to choose two different ways to encounter a legendary Pokémon on PRO.

Instructional walkthrough

Preparation for the quest

It is recommended to prepare well for this quest as you have to fight through a large area with many trainers in order to be able to catch Heatran.
Entering this area requires a Pokémon with a level of 60 or less. And you can only bring one Pokémon with you. Therefore, a good choice of your partner is important.

Depending on which way you choose to catch Heatran, the following Pokémon are often recommended:

Umbreon or Gardevoir
Snorlax, Gyarados or Garchomp

You should keep in mind that all Rare Candies and Master Balls will be taken away by an NPC for the duration of the quest. Once the quest has been completed, the NPC will return them.

Stark Mountain

The closest Pokémon Center to Stark Mountain is located in Fight Area, therefore you have to pass through Route 225, Route 226 and Route 227 in order to enter [Stark Mountain]] and fight through Stark Mountain Entrance Pt to reach Buck and the starting point of the quest. Based on this fact, it is recommended to clear these areas first, as Stark Mountain can only be accessed with a single Pokémon in your team which has a level of 60 or less. Passing through this area without clearing it first may result in unwanted level-ups.

Once arrived at Stark Mountain, you can enter the cave. Pass through the first part and talk with Buck. When you hit the requirement of having only one Pokémon in your team which is level 60 or less, the quests starts. Buck will take all Rare Candies and Master Balls from you, you can also not leave this area without canceling the quest. If you do decide to leave, you will need a level 60 or lower Pokémon to enter again. Same goes for fainting inside the mountain.

Once you are in the mountain, you have to cross through it in order to enter the inner cave where Heatran is located. For that, you have to pass through many trainers. To help yourself, you can catch some Pokémon in the cave to be able to heal up your main Pokémon with Revives or other healing items, in case it gets defeated or low on health. Defeating all the trainers can be an advantage, in such a way that the final fight, which must be done after this part of the cave, will be easier. The shortest, meaning the way with the fewest trainers, is shown below.

All trainers and their teams are listed here:

Heatran (quest) Main Cavern Pt Trainers

Psychic Sterling

	Grumpig
Lv. 58

	Baltoy
Lv. 59

Galactic Grunt

	Weavile
Lv. 60

	Spiritomb
Lv. 61

	Honchkrow
Lv. 62

Notes: This trainer does not reward any money nor experience.

Ace Trainer Natasha

	Dunsparce
Lv. 60

	Scyther
Lv. 59

	Marowak
Lv. 62

Mountaineer Jarrett

	Hitmonlee
Lv. 59

	Hitmonchan
Lv. 58

	Primeape
Lv. 60

Notes: This trainers Pokémon know various illegal moves, such as Roost and Glare.

Lass Zoe

	Ludicolo
Lv. 59

	Lanturn
Lv. 60

	Quagsire
Lv. 60

Pyromaniac

	Magmar
Lv. 60

	Heatmor
Lv. 62

	Emboar
Lv. 65

Trainer Meryem

	Banette
Lv. 57

	Electabuzz
Lv. 60

	Shiftry
Lv. 58

	Medicham
Lv. 62

Elder Natasha

	Wigglytuff
Lv. 59

	Gardevoir
Lv. 60

	Clefable
Lv. 62

Youngster Stefan

	Larvitar
Lv. 55

	Magcargo
Lv. 57

	Magmar
Lv. 60

Scientist Teddy

	Donphan
Lv. 56

	Tauros
Lv. 57

	Kangaskhan
Lv. 59

Dragon Tamer Drake

	Bagon
Lv. 55

	Shelgon
Lv. 60

	Salamence
Lv. 65

Nerd Bladermagician

	Raticate
Lv. 57

	Drifblim
Lv. 59

	Scizor
Lv. 63

Notes: This trainers Drifblim knows Destiny Bond.

Lass Monique

	Ursaring
Lv. 58

	Luxray
Lv. 61

	Gliscor
Lv. 64

Trainer Chelsea

	Glalie
Lv. 62

	Absol
Lv. 65

Pokéstop Agent

	Lunatone
Lv. 60

	Solrock
Lv. 60

Galactic Grunt

	Garchomp
Lv. 70

	Krookodile
Lv. 71

	Excadrill
Lv. 72

	Golurk
Lv. 73

	Weezing
Lv. 74

	Lucario
Lv. 74

All NPCs cool down after 7 days unless noted contrariwise.

Stark Mountain Heatran Pt

Once you have reached Heatran’s room, you will have a dialogue scene and have to fight Commander Mars.

Commander Mars

Skuntank

Move	Type	Category	Base Power	Accuracy
Night Slash	Dark	Physical	70	100
Double-Edge	Normal	Physical	120	100
[[]]			—
[[]]			—

Toxicroak

Move	Type	Category	Base Power	Accuracy
Rock Slide	Rock	Physical	75	90
Cross Chop	Fighting	Physical	100	80
[[]]			—
[[]]			—

Bronzong

Move	Type	Category	Base Power	Accuracy
Metal Sound	Steel	Status	—	85
Psychic	Psychic	Special	90	100
[[]]			—
[[]]			—

Luxray

Move	Type	Category	Base Power	Accuracy
Wild Charge	Electric	Physical	90	100
Ice Fang	Ice	Physical	65	95
[[]]			—
[[]]			—

Milotic

Move	Type	Category	Base Power	Accuracy
Dragon Breath	Dragon	Special	60	100
Hydro Pump	Water	Special	110	80
[[]]			—
[[]]			—

Emboldened moves avail from a STAB bonus when deployed by that Pokémon.
Italicized moves are functionally broken; see their individualized pages for more information.

Catching Heatran

Now that Commander Mars has been beaten, you can fight Heatran which is level 99, and have the chance to catch it. Doing this won’t allow you to sync it or use a Master Ball. Alternatively, you can defeat it in order to talk to Buck who will give you your Rare Candy and Master Balls back and you can leave the cave, to retrieve your desired sync, and re-enter it without any requirements needed. If you choose to defeat it, Heatran will re-spawn in its room but will be level 30 this time.
In case you were unsuccessful in catching Heatran, you can earn a second chance at catching it by beating Nikola.

External Links

Legendary Pokémon Quests Megathread