This is an excerpt from “$uccess, Your Path to a Successful Book,” by Maralyn D. Hill and Brenda C. Hill.
After describing your characters’ physical characteristics, move on to their personality:

Introvert–quiet, shy, standoffish, loner

Extrovert–outgoing, meeting and greeting, first with an answer

Cold or warm and inviting

Domineering or overbearing

Nervous, shy or submissive

Sad or gloomy

Intelligent, street smart, slow, ignorant

Boring, know-it-all, dull

Eccentric, unique in style and thought

Charming, likeable, knows what to say

Well-bred, good manners, polite, knows what to do and say

Devious, sly, questionable, always looking for angles

Evil

Amoral, no values

Annoying, nerve racking, wearing

Puritanical, strict in approaches, unbendable

Happy, cheerful, comfortable

Type A, go-getter, work-alcoholic, driven

Type B, laid back, takes it easy, slower paced

Mentally ill (type of mental disorder)

Psychological and psychiatric problems

Diseases, disorders, or afflictions

Alcoholic or substance abuse

Flirtatious

Childish

Strong, brave or weak

Vices, abuser, pushes people around

Addictions, drug, alcohol, food, shopping, gambling.

Next consider:

Hobbies

Sports

Associations

College degrees and where they are from

Occupations

There is still more to come on this topic. Many find it useful to have a character notebook or at least a page in a document on your computer.

Maralyn D. Hill and Brenda C. Hill
Books By Hills
$uccess, Your Path to a Successful Book
SLOG Success Log
GLOG Global Log