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Water-type Mudkip is one of the three starter Pokemon in the Hoenn region, and it’s arguably one of the more popular choices for beginner trainers. WithPokemon Scarlet & Violet’s expansion pass fully accessible, you can find and catch a wild Mudkip in the Indigo Disk DLC… but there’s a catch.
Starter Pokemon are already rare, so to get them to appear in Terarium, the setting for Indigo Disk, you will need to expand one of its biomes. Once this is done, you can find Mudkip in the wild. Even if you don’t plan to add Mudkip or its evolutions to your party, you’ll need to catch them if you want to complete the Blueberry Pokedex.

Where to Find Mudkip in Pokemon Scarlet & Violet
Coastal Biome in Terarium (3000BP)
Mudkip appears in theTorchlit Cavernof theCoastal BiomeinTerarium(Indigo Disk). However, it will only appear if you havecontributed 3000BP to the Terarium Club (Coastal Biome). you may contribute BP by accessing thecomputer in the League Clubat Blueberry Academy. To have access to the League Club, you will need to have completed “The Way Home” and the Kitakami/Teal Mask storyline.
you’re able to go to Terarium/play Indigo Disk after completing the main storylines ofScarlet/Violet(ie: Penny, Nemona, and Arven’s quests), but you will belocked off from the League Club until you complete"The Way Home." Thus, you should probably be in the postgame before speaking to Director Cyrano at Naranja/Uva Academy.

Blueberry Points, or BP for short, are a currencyearned from Blueberry Quests (BBQs). BP can be used to buy evolution items at Blueberry Academy. However, they’re better off being contributed to other clubs, as doing so will unlock gameplay features that weren’t accessible inScarlet/Violet’s core game or the Teal Mask.
Once you complete your first class in Terarium, you will start getting BBQs. You get three at a time, and when you complete a quest, a new one takes its place. Since the BP rewarded for BBQs can range from double-digits to triple-digits, it’s going to take you a while before you can farm up to3000BPfor the Coastal Biome.

How to Get Mudkip without Indigo Disk DLC
Trading or Transferring
If farming 3000BP is too tediousor if you don’t haveScarlet/Violet’s expansion pass, you can get Mudkip throughtradeortransfer. Before you can do either of these, you will need toconnect/link your Nintendo Accountto buy a Nintendo Online Membership (trade) or link your account toPokemon HOME(transfer).
Trading for Mudkip
If you have a Nintendo Online Membership and someone you can trade with, then you can get Mudkip by doing the following:
Transferring Mudkip
Now thatPokemon Scarlet/Violethas compatibility withPokemon HOME, you can transfer compatible Pokemon from other games toScarlet/Violet. Mudkip can be caught in the following:
You will need to place Mudkip from the source game (i.e,SwSh, BDSP) into a PC Box before you may transfer it toPokemon HOME. If you’re transferring fromPokemon GO, you will need to have yourGOaccount linked to yourHOMEaccount (on mobile).

How to Evolve Mudkip & Marshtomp into Swampert
What Level Does Mudkip Evolve?
Mudkip evolves into Marshtomp atlevel 16. When Marshtomp reacheslevel 36, it can evolve into Swampert. Since the wild Mudkip in Torchlit Cavern are very high-leveled, this only applies to Mudkip you hatch from Eggs or transfer from compatiblePokemongames. To evolve the Mudkips in Terarium, give itone Rare Candyto evolve it into Marshtomp, then one more to evolve it into Swampert.
When Mudkip evolves into Marshtomp, it becomes aWater/Ground-type. This is a good dual-typing since it gives Marshtomp and Swampert immunity toElectric-type attacks,one of Water-type Pokemon’s primary weaknesses. On the downside, Water/Ground-type Pokemon have a4x weakness to Grass-type attacks, so you’ll want to keep this in mind when battling.