Really likin the first version, and the second has tons of potential. Somethin just seems a little off about it though, but it's still a damn good and original idea. Kinda reminds me of Toad Man from the Mega Man series too, which is always a good thing in my book. I think you've got something here
I think I know what it is. I noticed that the shoulder bulbs, horns, and eyes are all competing for attention. I'm going to alter it a little there to make it look better.
I think you might be right. I think it may be the shoulder bulbs more than anything else, but I wouldn't eliminate them completely. Maybe shorten the horns as well, but overall, it's a damn good design my friend.