Hi! 
I still can not decide on the color, while I think about the layout of the scene, and in the near future I will show sketches. Happy New Year !
The first one looks more urban, although it could still use some tweaking, maybe a cyan, magenta and black scheme? or replace the greens on the first one for blacks and blues, if that is what you are looking for anyway. 
Overall, I feel it could use more blues instead of greens, like, referring to the very first face you had, the red/black one with blue strokes behind, seemed very fitting. Just my opinion though 
Thanks for the feedback, I will try to make another version with such a palette as on the face, I think that you are right and I need to return to the starting position
3 and 4, but I always am attracted to silly things that stand out and those two caught my eye for that reason, so keep that in mind!
Found it more legible on 5th than 4th (although 1st could be interesting (+ the dog bitting some foe or something on back ?) if you extend your illustration on right).
But do the one you prefer of course !
I'm fond of the stance and graphical aspect on 2. Perhaps in an environnement and perspective like 4,5? I already imagine your character striking a homerun and the dog is ready to fetch the ball (the ball is a foe's head, of course).
3 is rather fun but we don't get the superpower.
Good luck!
Thank you all 
for your comments and your support! I think that option 4 or 3 or 2... 
. I still need to think before making the right decision)))
Guys ! After much deliberation and reasoning, I chose option 4)) It seemed to me the most successful and revealing the topic)
A solid choice!
Thank you
The concepts are doooope! I look forward to seeing the finished piece!
Thanks) I will soon finish the final drawing and will definitely show you what happened, I'm afraid not to have time ... very little time left, I hope that the organizers of the competition will add a little more time))
Yeah, I'm cutting it close too and we already had an extension. 
Hope you finish in time too!
Awesome, love the jaw on the dog. And the two finger grab on the guys collar is a great touch.
So much action going on, great job! I think you went for a good composition choice in the end, though they were all fun.
