Undercity Catacombs

Undercity Catacombs (Catacombs,  UC) is a dungeon located southwest of Tanren Undercity. This dungeon is mostly comprised of Rock-, Ghost-, and Poison-type Pokémon.

Attributes

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All floors have darkness, along with small water tiles spread out along the floors. Water stop appearing on Floor 21 onwards.

There is a warp puzzle after Floor 20. It can be relatively easy should the player commit the puzzle to memory. Below is a guide.

Boss
Upon reaching the end of the dungeon, the player will get the attention of a single Onix who proceeds to call in another Onix and their boss, a Steelix. The second Onix questions how they player got in despite the place being barricaded. Steelix questions how the player, a small Pokémon (even if the player is playing as something like an Onix) managed to get this far. The three then attack the player. Once defeated, Steelix is in shock that the player beat them and orders the Onix to take what they have and leave. Before they do, Officer Magnezone and his two Magnemites come in and try to arrest the three for repeated crimes across Tanren. Steelix and the Onix manage to escape. Magnezone then orders Deputy Magnemite to notify all of the deputies before asking the player if they saw where they went, getting visible silence. Magnezone takes note of this and tells the Magnemite that they need to leave. After this, the passage to the end room opens up.

They know the following moves:


 * Onix 1: Iron Tail, Rock Blast, Rock Slide, Torment
 * Onix 2: Bulldoze, Rock Tomb, Screech, Slam
 * Steelix: Iron Tail, Screech, Stone Edge, Thunder Fang

Undercity Catacombs End
The end room contains two boxes.

Box items:
 * Ekop
 * Purple Bow
 * Dawn Stone
 * Dusk Stone
 * King's Rock
 * Metal Coat
 * Reaper Cloth
 * Shiny Stone
 * Psyche Dust
 * Max Elixir
 * Max Potion
 * Max Revive
 * Old Gateau
 * Revive
 * Restore Power
 * Rotten Apple
 * Purple Gummi
 * Relic Copper
 * Relic Gold
 * Relic Silver
 * Invisify Orb
 * TM Payback

Secret Room
Undercity Catacombs can spawn Secret Rooms starting from Floor 11. There are two boxes in the Secret Room. You can also use Honey to spawn a horde of Mandibuzz that may include a recruitable Vullaby. Vullaby can only spawn once per Secret Room.

Box items:
 * Nothing
 * Dusk Stone
 * Lunar Ribbon
 * Moon Stone
 * Sun Stone
 * Max Potion
 * Max Revive
 * Revive
 * Restore Power
 * Revival Herb
 * Lum Berry
 * Rare Fossil
 * Rare Bone
 * Relic Copper
 * Relic Gold
 * Relic Vase
 * TM Shadow Ball

Pokémon
''Pokémon in bold are recruitable. Please visit the Recruitable Pokémon page for more information.''


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Items

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Dungeon Objective
The objective of the dungeon is to complete it and gain access to Undercity's shortcut in Cognito. This is also the only dungeon with Yamask as a recruitable Pokémon, and also has Vullaby as a recruitable Pokémon that can be spawned with Honey in the Secret Room (though you can save Honey if you attempt to recruit it in Spectral Thicket instead). Durant can also be recruited here, though it can also be found in Rocky Ravine at a better recruit rate.

Tips

 * Bring some Honey with you if you intend on recruiting Vullaby, which only spawns in the Secret Room.
 * Bring something that can negate/heal Paralysis, as the dungeon's Onix know Dragon Breath.