Please note we are letting Onslaught make use of the powers he nicked so this fight will be fair.since onslaught had control of the astral plane and had the ability to transport that to the real world then wouldnt this be the same as f richard's reality bending powers?. Instead of bending reality, onslaught can make things into reality. As for onslaught vs akira......i would still go with onslaught i.e. second sun (not a pocket something). Anyway akira is cool.....pretty powerful.
no way was he the most powerful villain...maybe the most powerful EARTHLY villain, but there are people who could defeat him
onslaught for me. BTW many cosmic characters would definately have no chance against onslaught i.e. galactus, phoenix, silver surfore et al. Check out onslaught challenging phoenix in the astral plane and youll know what im on about.