>>43298595Having gen 2 pokemon revealed in the very same year as gen 1 was released , does indicate that some gen 2 pokemon was designed during red and green's development. Kotora and the unused baby pokemon are proof of this.
Maybe Ho-Oh was created very late in gen 1's development because there is no evidence of within the game's code. Or who knows? Ho-Oh might be created right after the development of red/green was done and are therefore among the very first actual gen 2 pokemon designed.
