It's great to see you come up with so many new things to look at. I'm really liking your Goku sprite the most out of all of these so far.
If you are struggling with Genesis's hair, just start all over from scratch and begin his hair anew. Its sometimes best to try again using a different base. You've got the Dante sheet right there, why not use his hair as base?
Bravely Default characters: Watch out with some of your placement of feet, hand and head positions. Its quite important to make sure that each has the right proportion to each other and such. This is most noticeable on Edea, she looks quite hunched over (this is the same for Yuna)!
Chocobo: It looks rather... robotic. Considering the only real piece of robot technology in FFT is Worker 8, maybe look at some knights armour from medieval ages and try to base the armour on that instead. And keep an eye on your shading particularly for this, if you compare the original chocobo to your current, the lighting on the armour should be very different.
Great start with all of them though, interested to see more