Ash's butterfree has to be at least level 10-20 because when ash's buterfree evolved, he only kept for a short while, then released it so it can't be that strong unless it got stronger while it was in the wild for so long
Butterfree found a soul mate and ash let it go.
Butterfree learns confusion at level 12.
level 10
Level 8
Kakuna doesn't evolve into butterfree, it evolves into beedrill at level 10 METAPOD evolves into butterfree at level 10
10.
I don't know what a Meatpod is. However mETApod evolves into Butterfree at level 10.
level 47
Level 10
If you catch a CATERPIE train it to level seven or ten and it will evolve into a METAPOD
Caterpie evolves into Metapod, starting at level 7, then Metapod can evolve into Butterfree at level 10.
It evolves into butterfree at level 10