1. You might want to lead with the name, which is might already clear out if it's a man or a woman. it might save you a few words.
Then you want to add a reference, maybe the novel or world that your favorite character is from, the ethnicity or race, geographic location or where the character lives now.
Then you might add what is the character's occupation. Maybe add the character's passion as well. Try to be concise.
In the end, you might want to list what you find interesting about the character. Achievements, hobbies and so on.
Here is a quick example:
<em>Legolas is an elven prince of the Wood Elves of northern Milkwood. He in first appears in The Lord of the Rings books and pairs with the Fellowship of the Ring to save the Middle Earth from a dark lord. He is also a great warrior, an amazing archer and a very good friend. Eventually, becomes the best friend of a dwarf named Gimli, even thought dwarves and elves hate each other.</em>