Battle System Design
One of these guys i'm guessing, so Morimoto or an underling.
Incidentally, I checked Morimoto's page for this, and I learnt this:
If the player has a Mankey with a Game Boy origin marking in their party
"You know Mankey, right? I'm actually the one who came up with it! The boss told me to make a Pokémon with a bit of this and a bit of that, and that's what I drew! I'm pretty fond of it myself!"
If the player has a Exeggutor with a Game Boy origin marking in their party
"We had a poll in the company once a long time ago to see which Pokémon was most popular... and back then the winner was Exeggutor!"
If the player has a Tauros with a Game Boy origin marking in their party
"Tauros used to be real strong, huh? I was the one who thought up that one. But Blizzard was a bit too strong, eh?"
If the player has a Diglett with a Game Boy origin marking in their party
"You know Diglett, right? It's actually basically just a character that I had made up when I was a little kid. I even drew up a flip-book featuring it then!"
If the player has a Mew with a Game Boy origin marking in their party
"You know Mew, right? I made it. Everything about it. The pixel art, its cry, its Pokédex entry, everything. I just barely finished in time, too! It was right at the very end of the game's development!"
Cute!