A battle of High Above beings! Arceus and Zeed Millenniummon are widely known as the strongest creatures in their known dimensions. (Although Blaziken>>>Arceus and Shine Greymon>>>>Zeed Milleniummon but that’s another story) Zeed Millenniummon has a lot of power at this disposal, but his lack of speed will be his biggest weakness. He has attacks that can go a long way, but Arceus’ barriers will help to mitigate the damage and he would be able to speedblitz Zeed Millenniummon. The speed factor is definitely Arceus’ biggest advantage and it’s what will give him the win. Arceus wins.