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Artist's commentary
Beta Pokemon - Rai, En and Sui
Also known as Raikou, Entei and Suicune's prototype designs for the Pokémon Gold Demo from 1997.
Wanted to have a go at designing them on what they might have looked like. Going by their sprites as best as I could. But seems them being known as dogs made a lot of sense looking at these older designs as compared to the newer ones.
Hope I did them some justice, though.
Also, am I the only one who thinks Rai's hair looks like a Super Saiyan type of hair? Goku anyone?