Personality Characters that lack personality are boring and forgettable. How does your character express himself? Is he loud or shy? Is he intelligent or dumb? Is he evil, neutral or good? What are his strengths and weaknesses? What are his likes and dislikes? These are all parts of your character's personality and you should incorporate all these into the design to create a greater sense of identity for the character.
Think 3D Design concepts usually start from 2D. Look further and consider your character in 3D. How would it look? Some characters look better in 2D and vice versa. Would your character translate well to 3D? The best kind of character designs look good in both 2D and 3D.
Think in Motion The image of your character may be static but the character probably will not. How would your character look in motion? It is easy to fall into a situation where the character looks good, but inanimatable due to factors we do not consider during the design process.
Colors Colors play an essential role in communicating a character's personality. Dark colors such as black and gray depict evil characters with malevolent intentions. Light colors such as white, blue, pink and yellow express innocence, purity and goodness. Comic red, yellow and blue suggest heroic qualities in a character.
Line Quality and Style The manner in which the lines of your character is drawn plays a part in defining to people what kind of personality it has visibly. Thick, soft and round lines suggest a cute, approachable character. Take the example of Super Mario. Having said that, besides helping to define personalities, different line qualities also help define different demographics. Sharp, scratchy lines suggest an erratic and uneasy character which may be more suitable for an older demography.
Source by Aldric Chang