Every one of the first 151 Pokemon are memorable for me, choosing just 5 will be hard but I'll do my best: 1.) Charizard (My favorite, and the only Pokemon I've ever liked enough to do a Single Pokemon Playthrough) 2.) Mewtwo (Because everyone remembers the last catchable Pokemon that was new, and they made movies about him for gods sake) 3.) Pikachu (Because he's {Pikachu and EVERYONE knows him) 4.) Poliwhirl (Probably my favorite water Pokemon that wasn't a starter (I always take the fire starter anyway)) 5.) Jigglypuff (I never really liked the ball of fluff but it's more memorable now because of Smash Brothers)