Here's how I beat em
Pikachu- Level 60 Typhlosion, Flamethrower, one shot
Espeon- Dunno
Charizard- 55-58 Lapras, 2 Surfs
Blastoise- Ampharos- Lebel 57-60. 2 or 3 thuderpunches
Venusaur- Typhlosion
Snorlax- Level 5 Gastly, no joke. Took a while though. Next time I battled it, I used Misdreavus,Mean Look, Perish Song
props to pokemonruler for the sweet sig and avatar