Leaf Green
Articuno lv57
Nature - Serious
Blizzard Water Pulse
Steel wing Reflect
Fly Hidden Power [Grass]/Rain Dance/Toxic
Ice Beam
Reflect combined with Articuno's high defense stat covers up for its x4 Rock weakness. Water Pulse is there to properly damage Fire and Rock types and Hidden Power [Grass] provides increased type coverage. Failing that, Rain Dance makes Water Pulse stronger and Toxic is always a worthwhile weakener.
Hypno lv 58
Nature - Brave
Hypnosis/Thunder Wave
Focus Punch/Brick Break
Dream Eater Shadow Ball
Psychic/Psych Up
Focus Punch is strong and all, but Brick Break is more reliable. The choice between Thunder Wave and Hypnosis is a matter of taste. Thunder Wave hits far more often and does give you a significant boost, but you can never know if the opponent is fully paralyzed or not so using Focus Punch becomes a matter of luck. Psychic is all well and good, although Psych Up could give you an edge against buffers.
Gyarados lv 60
Nature - Jolly
Fire Blast Earthquake
Thunder Hidden Power [Flying]/Return
Hyber Beam Dragon Dance
Surf Thunder Wave/Rest
So horribly wrong. Gyarados' Sp.Attack is lousy and the Jolly nature makes it even worse. Plus, Hyper Beam is pathetic. Proper physical attacks are the way to go.
Beedrill lv 62
Nature - Jolly
Aerial Ace
Twineedle
Cut Sludge Bomb
Solarbeam Swords Dance
Beedrill is a rather weak pok?mon, but that doesn't mean it's worthless. This moveset needs some improvements though. Solarbeam without Sunny Day is a waste of turns especially with Beedrill's low Sp.Attack (Further decreased by the Jolly nature) Again, physical attacks are the way to go. And Cut should never be given to any pok?mon you actually use. There are HM slaves for that stuff.
Venusaur - lv 63
Nature - Relaxed
Strength Sludge Bomb (Unless used on Beedrill)/Body Slam/Return
Razor leaf/Earthquake (Unless used on Gyarados)
Frenzy Plant Leech Seed
Rock smash Sleep Powder
Strenght and Rock Smash are both HM moves that should never be used in movesets due to the simple fact that there are better substitutes for them out there. Seeing as how Earthquake would already go to Gyarados I'd suggest giving this one Body Slam or Return, both of which are better than Strength. Also, Leech Seed is your friend. You should never discard it, ever.
Zapdos - lv 67
Nature - Relaxed
Thunder Bolt
Shock Wave Hidden Power [Grass/Ice/Water]/Light Screen
Fly Thunder Wave
Drill Peck
Placing in two moves of the same type is a waste of moveset space. Drill Peck > Fly and Thunderbolt > Shock Wave so Shock Wave and Fly have to go. Hidden Power is once again there to provide type coverage, but if you don't get a favourable type to it then Light Screen can help you keep Zapdos alive a bit longer. Thunder Wave is there much for the same reason as paralysis is a considerable advantage in battle that shouldn't be underestimated.
Thanks