The story characters are like the sugar for the cake or the salt for our food. Well-developed character will give too much strength to the story we write. Or we are planning to write. We all knew Harry Potter, Voldemort, Aragon, Gandalf, and Frodo. We do not like all of them some will be forgotten and other is remembered for good.
The characters of the story are like the brick for the population of the story. You cannot make a good community without forging good characters to build it. As an example the Starks from the game of thrones or the elves and the dwarfs from the lord of the rings.
So after this brief introduction about the effect of the character on the strength of the story. Now we come to the biggest question: How can we make unforgettable characters?
You can read more about this post here