Sorry for not replying...so where do i get the adventure_common.arc? And for the rest of the enemys just place them in the adventure folder?
The file adventure_common.arc is found inside...
ISO:\stage\adventure\
That file is actually a compressed PAC file, so BrawlBox is capable of reading it.
For the Subspace Enemies, again they're inside the multiple stage PAC files that use the following values...
######.pac
You would have to dig your way through each one of those files for the enemies you want to modify.