lavander town syndrome/lavander tone

[Vipershark]

Suigin, that guide said doing the missingno glitch with your name set to "gca" (case sensitive) causes 731 to show up. Can you confirm this?

Also, I haven't played red and blue in a long time so I don't really remember, but I know that when fighting the boss GHOST at the top of lavender tower, its sprite eventually turns into a cubone. How is this transition done? Perhaps 731's animation uses the same technique?