As a flower-picking thief, you must endure hardships, be able to deceive others, and learn the ultimate secret of picking flowers, so that you can win the beauty back.
As a villain boss, you must have a bunch of crooked-looking younger brothers who can abuse the protagonist, but also make the protagonist grateful, and then fall in love with you.
As a cute pet, you must have the image of a weak and cute pet that is easy to push down, be able to support the owner, and defeat wild monsters.
As a tentacle type, you know...