My #1 undrafted still available!

RBY Slowbro is no joke. In fact, it might be the best pokemon in this format. Water/Psychic is incredibly good typing in RBY, and Slowbro learns Psychic naturally, so I don't have to waste a stupid TM29 on it. That means I can use HM03 and teach it Surf. Oh, and Slowbro gets Amnesia. Amnesia is the best move in all of RBY. In one turn, Slowbro doubles both his special attack and special defense. Doesn't get more overpowered than that. And Slowbro has awesome physical defense to sponge hits while setting up. In this format Mewtwo can't do a damn thing to Slowbro, and neither can Alakazam. Hell, even Zapdos will need a critical hit to beat Slowbro after he's done setting up on you losers!

Slowbro
~ Psychic
~ Surf
~ Amnesia
~ lol who cares about the 4th move

My other great undrafted

Golem is rock-solid in RBY. He has great attack and defense, and all the moves he needs to pummel his opposition to dust. Unlike his undrafted Rock/Ground cousin, Golem actually learns his best moves naturally, and thus isn't made useless by a TM-limit. Specifically, Golem learns both Earthquake and Explosion naturally. That means I can teach it Rock Slide by TM and have the only good Rock move in the game. Rock Slide will annihilate the overrated Charizard in one hit, and down Zapdos in two hits. Speaking of Zapdos, Golem completely shuts down the legendary bird, being immune to Thunderbolt, and taking close to nothing from Drill Peck. With Slowbro and Golem my team is extremely slow, but I get the two BPA's and have a super-solid core now.

Golem
~ Rock Slide
~ Earthquake
~ Explosion
~ lol who cares about the 4th move