Ideas for characters

I have several ideas but I tend to be mostly a perfectionist with them.
Several characters that come to mind have good ideas, but as I build them they end up in a place where they are not as good as I like and I abandon them. I would like to know if anyone wants to suggest or give their opinion on something, otherwise, ideas that I have/had are:

A mermaid
a dragon
a draconian from DND
a policeman
an Adventurer
a king
LoL Pantheon
another knight
2 other princesses (sisters of the one already uploaded), as well as a younger, kinder version of the one already there.
a rookie boxer
Dark Souls II Emerald Herald
One of the "best friend x topic" type, I find them curious if they are constructed well.
A classmate.
One of the "Best friend x thing" type, same reason.
A RDR2 style cowboy
A swordsman based on ancient Rome.
A more anime style dragon woman.
And a non-hostile demon.

leave a comment if you have any ideas or if you like one of the ones mentioned.
The mermaid, Herald Esmeralda, and the boxer are half-finished, as well as one of the princess's sisters. If I see that they are of interest, I will take them up again.