No#1 - might have worked if you'd limit it to only 1 character.
No#2 - at first glimpse I'd completely ignore it because of the text and borders and generally it's big, but then I looked closer at it; the idea is great and despite those two things, the execution is quite good
No#3 - I was about to give a vote to this one, but the size, ratio, text (ugh) and general chaos kinda made me changed my mind after a while
No#4 - stock, no
No#5 - really nice as a signature, something people would love to wear, but the text sticks out, same for border and low contrast, or rather, losing original colour; still you have quite great skill to make me say it's actually a good entry when working on a stock
No#6 - vertical, no
No#2 gets my vote for creative idea, I'd love to see more of such works~