Vini310's sprites showcase and feedback

[Vini310]

Sorry for the huge delay in updates, I was trying to fix a problem, so let's recap:
After spriting that Mermaid, I wans't happy with the final result, so I decided to make some templates for the sake of consistency.
Right now, I have two templates, but I've only shared one online, so let's focus on it instead:

The "GB-style template": https://www.deviantart.com/vini310/art/G...-875414632

And all the four sprites I made using it:
https://www.deviantart.com/vini310/art/K...-874623014
https://www.deviantart.com/vini310/art/I...-874624111
https://www.deviantart.com/vini310/art/R...-874709491
https://www.deviantart.com/vini310/art/Z...-874836739

So, what do you think about these sprites?

And if you're curious about the other template, it's a more "GBA/DS-esque" style, but I'll post it later.