Verified answer

what a weird moveset u got.....

first of all,charizard's moveset is not good...change steel wing to dragon claw...why?because charizard is good on special attack not attack stat.....i recommended u change rock slide to blast burn better...u can get one by two island by the end of the cliff in the north of the town....

vaporeon should change both dig and bite for toxic and acid armor(vaporeon defense is low so u should cover it).....anyway, dig is not suitable to vaporeon due to it's low attack....

.....nidoking learning shock wave?what for....sludge bomb is better rite?it is a STAB move plus it's more powerful than shock wave....u need to change ice beam to rock slide so u can beat ice pokemon.....

u make another mistake....in case u didn't know,shadow ball is a physical move by gen III so it's not suitable with mr.mime....instead teach it thunderbolt....make sure it holds a miracle seed...

raichu....u know it's signature attack didn't u?volt tackle that is....u can get volt tackle by breeding while the female raichu/pikachu hold a light ball and if u breeding with a ditto,make sure raichu or pikachu hold a light ball whether it's a male or female...it doesn't matter if u want it to learn it or not....

seems like u will need a pokemon for your sixth one...i agree that butterfree is not a good pokemon for your team....so....how bout a normal pokemon?it has immunity that is ghost and only one weakness which is fighting...a kangaskhan is good in your team....here's the moveset if u wanted....

kangaskhan (facade or return,shadow ball,iron tail,double-edge)

I'd go with Alakazam He's a great Psychic type and Psychic Types are very Useful In the Elite Four. Good luck!

Well it depends on the level of your pokemon.

If your going for the best all around team I'd aim for a Grass or Rock pokemon, in addition to your current ones.