Graphical differences in First Gen

[IIMarckus]

The following pictures differ among the various Japanese versions:

• 151 frontpics changed from R/G to Blue, and again to Yellow.
• Brock, Misty, and Erika changed from R/G/B to Yellow.
• The player character frontpics changed from R/G/B to Yellow.
• Three rival frontpics changed from R/G/B to Yellow.

As far as I can tell, none of the images from Japanese Blue changed to US Red/Blue, nor from Japanese Yellow to US Yellow.

Are there any that I missed?

[Torchickens]

The following pictures differ among the various Japanese versions:

• 151 frontpics changed from R/G to Blue, and again to Yellow.
• Brock, Misty, and Erika changed from R/G/B to Yellow.
• The player character frontpics changed from R/G/B to Yellow.
• Three rival frontpics changed from R/G/B to Yellow.

As far as I can tell, none of the images from Japanese Blue changed to US Red/Blue, nor from Japanese Yellow to US Yellow.

Are there any that I missed?

There are the Aerodactyl/Kabutops fossils, which differ between Red/Green, Blue/Pikachu and localisations.

(Red/Green) (Others)

(Red/Green) (Others)

[IIMarckus]

I did catch those a few weeks ago, but never updated the post here.

[Torchickens]

Glad to hear it. I'm sorry, I should have checked your disassembly, but I wanted to make sure that you had them anyway.