>>28806089Blastoise in Gen I didn't had a "barren movepool".
Surf, Hydro Pump, Ice Beam, Blizzard, Body Slam, Earthquake, Bite (for the Playthrough), Bubblebeam, Seismic Toss.
Blastoise problem was that it was a physically defensive Pokémon with not outstanding stats and had competition with a lot of Water Types.
With Gyarados, Lapras, Starmie and Slowbro as options, Blastoise was outclassed hard.
Fire Types on the other hand, were very bad back then as a whole. Charizard not being able to learn fucking Fly on RBG was the worst thing to happen to it, since it couldn't abuse Swords Dance since the best physical move it was able to learn was Slash before Yellow.