Nethera looks ok, but his armor could use some upgradin, his head looks like normal, then his armor is just, weird, in comparison.
Omega looks cool, and i like the design, but everything sorta blends together, i have difficulty telling his arms apart from his cape.
also, if Omega is a God, then he needs to seem bigger, more intimidating, he needs to exude awesomeness, and power, this is just, a cool, serious, sword-dude who is like, leet. but not godly.
just my two cents. feel free to ignore this.