Character Sheet is a setting illustration which shows character either in different poses for proper view of the costume (front, back, side etc.), facial emotions, costumes, accessories etc. to give better details of the character and their costume.
These illustrations are the most convenient for artists when they want to draw certain character or costume.
Note:
Images similar to #2380810 is not a character sheet but an illustration.
Images that has information about the character in text mode (dislikes, likes, weight, blood type, height etc.) #1749446 should be tagged as character profile instead.