>>35276784There's a reason why 50 shades of heliolisk's arts seem different than the leaked ones. Because he follows a personal art-style which is similar to the pokémon one. This means that for drawing the starters, he had to put more effort to making them convincing and drawing them like the pokémon-style.
>>35276831I don't really know why he made the evolutions in this way, he even forget about the poison spurt of the platypus one.
Maybe it's because he didn't had in mind to draw evolutions of those starter before, so he lost a lot of inspirations and made them just for fan-service, indeed they follow more its art-style than the original one.