No weapons: Without the Chaos Emeralds, Mephiles' powers are severely hindered. He can still probably use the dark spear the killed Sonic with though, which would be too quick for Mario to Dodge with a jump. Mephiles probably wins because Mario will be impaled and will DIE!
Weapons: Mephiles uses the Chaos Emeralds to duplicate himself and unleash his dark powers. Mario uses a Star to go invincible. Tie.
In my opinion, Mario would win easily. In my opinion, yes. Sonic would win.
Well Mephiles would win against Nazo since Nazo is weaker than Seelkadoom and in Ultimate Sonic Adventure Nazo lost to Super sonic 4 sonic, super tails and Super Knuckles 3 and than when Seelkadoom was created by Mephiles he was powerfuler than Sonic and Shadow but lost to the fusion of Sonic and Shadow, Shadic but he then turned on the bad side to go on Sonic's side and then helped him to stop Mephiles plans but, it ended up as a disaster since Mephiles stabbed him from behind so he died in Ultimate Sonic Adventure so that makes Mephiles the winner against Nazo.
Sonic
No
Mario
Mario, in my opinion.A:Espio would win easily because: 1. he runs faster than Mario2. espio is a ninga and ningas kick ass3. espio would turn invinsible then Mario would be doomed4. espio can beat Mario anyday
Mario for sure!
Mario
Mario
Mario why because he can sqush hitler!
mario. cartmans fat
Mario !