This is an Entei way back from when gamestop had a shiny Entei Suicune and Raikou event, pretty sure as far back as Diamond and Pearl days but I'm not sure. The
Pokemon Ultra Sun Moon Shiny Entei Max 6 IV [Fast Delivery] CUSTOM "BEST" | eBay
Competitive Pokemon: Entei by Strikerprime on DeviantArt
Pokemon Sword and Shield Entei | Locations, Moves, Weaknesses
gen6] Revisiting Omega Ruby, Shiny Entei in around 400 SR's!: ShinyPokemon
El Verdadero CAMPEÓN | Dibujos de pokemon, Imagenes de pokemon go, Imágenes de pokemon