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This article contains major spoilers!

Anthian Sewer is a hidden passageway between Anthian City - Shopping District and Anthian Park. It also contains the power core of Anthian City, as well as a research facility. This place is only accessible after obtaining Soaring Badge, as well as the Basement Key.

Notable Events

Note: The following events happen after acquiring Soaring Badge from Gym Leader Stephen and Basement Key from Uncle Gerald.

Sneaking Through

After Rival Jake is captured, Rival Tess teams up with the player to rescue him once the player obtains the Basement Key from Uncle Gerald. All trainer battles will become Double Battles and Tess will heal the player's Pokémon after each trainer battle until the player and Tess reach the end of this sewer. Once they open the door to Anthian Park, they immediately find Jake being held captive, as well as...

Bomb Disposal

After defeating the Eclipse Boss in Anthian Park, the bomb installed on the power core goes off, causing the city to plummet! However, a certain duo of Legendary Pokémon manage to stabilize the city, as well as to send the player and Tess back in time into the Anthian Sewer once again before the bomb was planted. The sewer has become greyscale, showing that the time has stopped temporarily, thus conveniently preventing Wild Pokémon encounters for the time being.

Before proceeding, it is highly recommended for the player to heal his or her Pokémon by depositing them into the PC right behind Tess one by one, and also switch Pokémon if necessary. Using the Core Key dropped from the Eclipse Boss, the player and Tess head back to the research facility and barge in the previously inaccessible power core room to stop Eclipse Admin Tyler from planting the bomb, only for him to dispatch a gang of Pokémon which are willing to use Explosion immediately when the fight begins!

Pokémon

Note: Rarity levels are estimations according to this scale and might be subject to changes due to different encounter assessment results. If there are any Pokémon with low catch rates, the possibility to flee or requirement of gaining happiness to evolve, recommended Poké Balls for that Pokémon will be shown with the corresponding bag sprite under the Pokémon's name.

Pokémon Type Image Rarity Items EV Yield
Walking Building Lv. 27-30
MagnemiteElectric
Steel
Magnemite XY
CommonNone1 Sp. Atk
Voltorb
Quick Ball
Electric
Voltorb XY
CommonNone1 Speed
Grimer
Kanto Form
Poison
Grimer-Kanto XY
UncommonBlack Sludge1 HP
Koffing
Quick Ball
Poison
Koffing XY
UncommonSmoke Ball1 Def
KlinkSteel
Klink XY
RareNone1 Def
Elekid
Dusk Ball
Electric
Elekid XY
Very RareElectirizer1 Speed
Click on the Pokémon names to check their learnsets on Bulbapedia. All Pokémon above have been updated to follow their movesets in Pokémon Sun and Moon. Hover on the item sprites to check the exact chance of being held by the Wild Pokémon.

Roaming Pokémon are not listed in the table above. They are fixed at Lv. 40 and have a 0.1% chance of appearing anywhere in Roria with wild encounter methods specified here.

Trainers

Double Battles

Note: Players should watch out for the devastating attacks Self-Destruct and Explosion.

Trainer Pokémon Type Level Image EXP EV Yield Reward
Partner
Rival Tess

Poké BallPoké BallPoké Ball
GabiteDragon
Ground
Lv. 40
Gabite-M-back XY
N/A
ShelgonDragonLv. 40
Shelgon-back XY
FraxureDragonLv. 41
Fraxure-back XY
Scientist Evan
Poké BallPoké BallPoké BallPoké Ball
Magneton ×2Electric
Steel
Lv. 42
Magneton XY
1467 ×22 Sp. Atk
each
$3240
MagnemiteElectric
Steel
Lv. 42
Magnemite XY
5851 Sp. Atk
ElectrodeElectricLv. 45
Electrode XY
16202 Speed
Rebellious Girl Amanda
Poké BallPoké BallPoké BallPoké BallPoké Ball
VoltorbElectricLv. 42
Voltorb XY
5941 Speed $1344
Electrode ×2ElectricLv. 42
Electrode XY
2268 ×21 Speed each
GothitellePsychicLv. 43
Gothitelle XY
30543 Sp. Def
MagnetonElectric
Steel
Lv. 42
Magneton XY
22002 Sp. Atk
Rookie Austin
Poké BallPoké BallPoké BallPoké Ball
Grimer
Kanto Form
PoisonLv. 43
Grimer-Kanto XY
6031 HP
$1056
TrubbishPoisonLv. 43
Trubbish XY
6031 Speed
Muk
Kanto Form
PoisonLv. 45
Muk-Kanto XY
16871 Atk
MightyenaDarkLv. 44
Mightyena XY
13862 Atk
Punk Guy Hunter
Poké BallPoké BallPoké BallPoké Ball
ScraftyDark
Fighting
Lv. 45
Scrafty XY
16481 Def
1 Sp. Def
$1472
ScraggyDark
Fighting
Lv. 44
Scraggy XY
6601 Atk
MachokeFightingLv. 45
Machoke XY
13692 Atk
MachampFightingLv. 46
Machamp XY
22373 Atk
Adventurer Mitchel
Poké BallPoké BallPoké BallPoké BallPoké Ball
MagnetonElectric
Steel
Lv. 44
Magneton XY
15362 Sp. Atk
$720
MagcargoFire
Rock
Lv. 44
Magcargo XY
13572 Def
RhydonGround
Rock
Lv. 44
Rhydon-M XY
16022 Atk
DoduoNormal
Flying
Lv. 43
Doduo-M XY
5711 Atk
GligarGround
Flying
Lv. 45
Gligar-M XY
8291 Def
Scientist Max
Poké BallPoké BallPoké BallPoké Ball
KlangSteelLv. 44
Klang XY
14522 Def
$3312
Porygon2NormalLv. 45
Porygon2 XY
17352 Sp. Atk
MagnetonElectric
Steel
Lv. 45
Magneton XY
15712 Sp. Atk
AmpharosElectricLv. 46
Ampharos XY
22173 Sp. Atk
There was no change to the above matches between any of the updates.

Single Battle

Note: These Pokémon will immediately use the devastating attack Explosion when they are sent out!

Trainer Pokémon Type Level Image EXP EV Yield Reward
Requires defeating Eclipse Boss in Anthian Park
Eclipse Admin Tyler
Poké BallPoké BallPoké BallPoké BallPoké Ball
Electrode ×3ElectricLv. 40
Electrode XY
1440 ×32 Speed each$3200
SolrockRock
Psychic
Lv. 40
Solrock XY
13202 Atk
LunatoneRock
Psychic
Lv. 40
Lunatone XY
13202 Sp. Atk
There was no change to the above matches between any of the updates.

Items

State Item Obtaining Location
Gold Item Ball
TM Poison
TM36 Poison
Sludge Bomb
Turn right after Rebellious Girl Amanda and enter the room.
Item Ball
Black Sludge
Black SludgeBehind the large sewage pool where the Worker is.
Item Ball
Dubious Disc
Dubious DiscGo to the room with lockers and a PC. Click on the third locker to reveal a secret room. Turn left and follow the path that bypasses the pipes, all the way to the end.
Requires defeating Eclipse Admin Tyler
Dowsing Machine
Light Ball
Light BallBehind the Core Reactor. (Hidden)
There was no change to the above items between any of the updates.

Trivia

  • Eclipse Admin Tyler is based on the creator of Super Bomb Survival — Polyhex. His team consists of Pokémon with the moves Self-Destruct and Explosion.
  • Anthian Sewer is a throwback to Castelia Sewers, Unova in Pokémon Black 2 and White 2. Both connect the central business district of their respective cities to a park, and both have the Rival team up with players when they first enter the sewers.
Soaring Badge Anthian City
Anthian City
Housing Dist. Affordable AnthianAnthian AbodesGolden Poké Ball (Arcade) • Pokémon Museum of History
Shopping Dist. Poké Ball EmporiumStone Shop • New Sushi Stick • Rorian Braviary • Hero's HoverboardsHobo's Lucky LottoAnthian FurnitureZombie's Painting & Hardware
Battle Dist. Anthian Gym & Airport • Roria Battle Frontier (Under Construction)
Anthian ParkAnthian Sewer
Roria
Roria
Towns Mitis TownCheshma TownLagoona Lake (Trenches) • Port Decca
Cities Silvent CityBrimber CityRosecove City (Beach) • Anthian City (Housing Dist.Shopping Dist.Battle Dist.ParkSewer) • Aredia City (Old ArediaAredia Ruins) • Fluoruma CityFrostveil City (Catacombs)
Routes 12345678910111213141516
Caves &
Mountains
Glistening GrottoSteam ChamberMt. Igneus (Igneus Depths) • Path of TruthSilver CoveMt. Cragonos (MinesCliffsPeakSanctuarySpringChamber of the Jewel) • Desert CatacombsNature's DenCalcite ChamberMartensite ChamberDendrite ChamberTitans' ThrongFreezing Fissure
Islands Lost Islands (Deep Jungle) • Voltridia Island (Cavern) • Frigidia Island (Cavern) • Obsidia Island (Cavern)
Other
Locations
Gale ForestOld GraveyardSecret GroveGrove of DreamsFortulose ManorCosmeos Valley (Observatory) • Tinbell Tower (Construction Site) • Secret LabShadow Void