Shiny Pokémon

For the first time, Pokémon Mystery Dungeon Rescue Team DX includes Shiny Pokémon. These Pokémon will rarely appear in various dungeons as powerful bosses or in general and can require a lot of damage to be taken down. Normally they are just standard colours but you have a small chance of encountering them shiny. On the map, these Pokémon are marked with a yellow "Strong Foe" symbol

When taken down by your leader, there is a slim chance they will join you. However, if your leader has a Friend Bow equipped, there's a much greater chance they will join your team.

Only 27 Pokémon have the ability of being Shiny.

Shiny Celebi is a bit different to the others as it doesn't appear as a Strong Foe in any of the dungeons. Instead, if you have recruited Celebi in Purity Forest and have the Healing Forest Camp, you will then be able to have a small chance to find Shiny Celebi in a Mystery House