I love them, especially the second w/Edward Elric. Two things tho. On the Elric one, I think the text should be in white and further left, and regarding flow, The curved neck is prominent, so maybe some of the squares should curve and curl. I don't know, I'm not a big GnA gui, but I'm just voicing my 'pinion.
The firs one is nice and eyecatching, but i like the second one the best because it looks nice and isnt halo... plus its FMA, that makes it #1 in my book automatically.
First - I love the colors, depth, and the use of C4Ds here. The text, IMO, would have looked better if it was white set at a low opacity or simply light gray. Second - Don't know what to comment on Third - The lighting is way too bright for my taste. Text looks guuuuud.
The first has no flow, and it needs it. Second is good, but the blocks distract from the focal. They could use better placement. Third doesn't have enough happening. Try darkening the edges where the light doesn't touch. Mess around with the contrast and gradient maps. It looks like all you did was take a Hatsune Miku stock, and put lighting with a few c4d's. Random vector needs to die. Text sucks on all of them, but the third completely ruins the theme.
*slow clap* Surprised me. Kill the vectors and text though. they look dull and have a flat blue color to them as opposed to the shiny reflection of what looks like the theme.