In order to unlock Legendary Pokémon encounters, a player must obtain ribbons by defeating gym leaders. Each ribbon represents a Pokémon region and unlocks its respective legendaries. All gym leaders in a region need to be defeated. You can track your progress from your profile by checking your obtained badges. In the past, elite 4 members, champions, battle frontier brains, and battle maison members had to be completed for all legendary Pokémon to become obtainable but is no longer the case after a v4 update.
Galar League
Gym Leaders
| Turffield Gym | 
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Milo
| |
 
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| Hulbury Gym | 
|
Nessa
| |
  
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| Motostoke Gym | 
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Kabu
| |
  
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| Stow-on-Side Gym | 
|
Allister
| |
   
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| Ballonlea Gym | 
|
Opal
| |
   
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| Circhester Gym | 
|
Gordie
| |
   
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| Spikemuth Gym | 
|
Piers
| |
   
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| Hammerlocke Gym | 
|
Raihan
| |
   
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Unlocked with Galar Ribbon
 #888 Zacian |
 #889 Zamazenta |
 #890 Eternatus |
 #891 Kubfu |
 #894 Regieleki |
 #895 Regidrago |
 #896 Glastrier |
 #897 Spectrier |
 #898 Calyrex |
 #905 Enamorus |
Other Legendary Ribbons
| Legendary Ribbons |
|---|
| Kanto · Johto · Hoenn · Sinnoh · Unova · Kalos · Alola · Galar · Paldea · Vortex |