Dr. Lavaさんのイラストまとめ

Beta Meganium:

In Gold & Silver's 1997 demo, Meganium was originally named Hanaryuu, meaning "Flower Dragon," and its flower was different. But interestingly, its sprite wasn't updated till Crystal.

1. Hanaryuu recreation by @RacieBeep
2. Gen 2 sprites
3. Gen 2 final artwork

(2/3) The Feraligatr family's Gold & Silver sprites transitioned from blue to green, but Sugimori scrapped the color progression and simply changed them to all blue (official artwork seen below).

The family's sprites were later updated in Crystal to reflect Sugimori's recolors.

Lost Pokemon of the Day: Green Feraligatr

In Gen 2, designers created Pokemon sprites first, then art director Ken Sugimori made their official artwork based on those sprites, often making some revisions... like scrapping the Feraligatr family's color progression.

(Thread, 1/3)

Lost Pokemon of the Day: Cactus

First officially revealed by Game Freak in the 2018 Satoshi Tajiri biographical manga, Cactus was created during the development of Gen 1... but didn't end up making the final cut.

(Photo descriptions & more info continued in thread below) (1/3)

(2/4) Bomushikā translates to "bomb sea lion," so he's sometimes referred to by his unofficial English name "Bombseal."

After Bomushikā was scrapped from Gen 2, the series didn't get a Water/Fire Pokemon until Volcanion in Gen 6 (who's actually classified as Fire/Water type).

Lost Pokemon of the Day: Bomushikā

First revealed when Gold & Silver's 1997 demo leaked in 2018, Bomushikā was a sea lion Pokemon, and if he'd made the final cut, would have been the series' first Water/Fire type.

(Photo descriptions & more info continued in thread below) (1/4)

Beta Ivysaur:

Ivysaur's original design dates back to 1990, long before Bulbasaur & Venusaur existed. Back then, Ivysaur was flat as a pancake, weighed down by the massive flower on his back.

1. Beta sprite recreation by @Raciebeep
2. Beta sprite, final sprite
3. Final artwork

Lost Pokemon of the Day: Crocky

First officially revealed by Game Freak in 2018, Crocky is one of the series' oldest Lost Pokemon -- he was created in the early 90's, but thrown out before Gen 1 was finished.

(Photo descriptions & more info continued in thread below) (1/4)

Beta Azumarill:

In Gold & Silver's 1999 demo, Azumarill had a very different design and was much shorter -- interestingly, it was later changed to blue, and gold ended up as its Shiny color.

1. Demo sprite recreation by @RacieBeep
2. Demo sprite, final sprite
3. Final artwork

Beta Azumarill:

Azumarill's earliest design was very different. However, gold might've never been intended as its final color, but was just using Baby Doduo's color palette as a placeholder.

1. Beta sprite recreation by @RacieBeep
2. Beta sprite, final sprite
3. Final artwork