It remains to be seen if the evolutionary line for Croagunk will be looked at in future games. The upcoming Pokemon Legends: Z-A will see a return of Mega Evolutions when it releases in 2025.

Before you can evolve it, you’ve first got to catch a Croagunk. It can be found in Gapejaw Bog, Scarlet Bog and Holm of Trials in the Crimson Mirelands location as a relatively common spawn.

If you’re looking for some easy XP, consider using a Star Piece as you catch Croagunk during Spotlight Hour to take advantage of the bonus. Pokémon is about catching ’em all, and in Pokémon ...

Croagunk is not a confirmed Pokémon that gets a “permaboost” (meaning that it’s a rare spawn and thus gets a boosted shiny rate). Not much, unfortunately. It appears to be random chance.