Say a Pokémon that you feel needs a mega evolution (or create a X/Y variant of a Pokémon that already has one), and then elaborate on details such as base stats (all mega evolved Pokémon have a base stat total 100 points higher than their base forms), abilities, and typing.
Visual details...
Ignoring any stink-related shenanigans, does Bacterian have enough of a power advantage to take both at the same time? Or can the team win? Goku is tailed.