This Looks awesome :)
If i redraw this enemy (say in Hollow Knight style), does the commercial use if non-redistributed license still apply?
Well, if you draw it from scratch, it's not really my sprite anymore is it? :D
i guess :) unless you say this character (and your other free sprites) are your IP and are therefore protected.
But i take this as a "feel free to do what you want". :D