Click this link. Take the test. Come back to see what key Babylon 5 character matches your personality type. Keep in mind that this is all for fun.
www.humanmetrics.com/cgi-win/JTypes2.asp
Legend for identifying letters. Note that each is a preference, not an absolute:
E: Extrovert - Prefers the company of others to being alone. Feels at ease in a social setting. Expressive. Outgoing.
I: Introvert - Prefers being alone to the company of others. Independent but socially awkward. Private. Reserved.
S: Sensing - Acquires knowledge through hands on experience. Detail oriented. Practical. Realistic
N: Intuitive - Draws conclusions from the extrapolation of a few data points. Theoretical. Imaginative. Idealistic.
F: Feeling - In tune with the emotions of self and others. Compassionate. Subjective.
T: Thinking - Concerned with logic and abstract ideas. Rational. Objective.
P: Perceiving - Takes things as they are. Relaxed. Spontaneous. Flexible.
J: Judging - Assigns values to things. Structured. Decisive. Responsible.
ESFP (The Performer) - Londo Mollari: When true to himself, Mollari is friendly and accepting. He expresses his love for life with exuberance, surrounding himself with fascinating people and material comforts. He generally brings common sense and a realistic approach to work, and has an enthusiasm that can make work fun. Spontaneous and adaptable, he can readily deal with new people and environments. He learns best by bouncing skills and ideas off other people.
ESFJ (The Provider) - Lennier: Lennier is conscientious and cooperative. He seeks harmony with environment. He works well with others to complete tasks. He proves loyal and follows through even in mundane tasks. He is quick to notice the needs of others and works hard to provide for those needs. He seeks approval for himself and his contributions.
ESTP (The Promoter) - Michael Garibaldi: Garibaldi is adaptable and accepting of others. He takes a pragmatic approach to achieve the most immediate results. Conceptual theories and rational explanations bore him. He prefers to action to solve a problem. Garibaldi lives in the here-and-now, enjoying each moment in the company of others. He enjoy material comforts and style. He prefers hands on experience to book learning.
ESTJ (The Supervisor) - Susan Ivanova: Susan Ivanova is a realist. She acts decisively. She is able to organize projects and oversee people to get things done. She focuses on the endgame and how to achieve it in the most efficient manner. She deals with routine objectives and follows a specific system that she expects others to respect. Ivanova is strict and forceful in implementing her plans.
ENFP (The Champion) - Marcus Cole: Marcus shows great enthusiasm and imagination. Life is full of possibilities. He makes connections between events and information quickly, and proceeds with confidence based on those patterns. He seeks affirmation from others and as such quickly shows his appreciation and support to others. Marcus is spontaneous and often relies on improvisation to deal with obstacle. Often Marcus resorts to his talent for language to get out of a pickle.
ENFJ (The Teacher) - Delenn: Delenn has a warm and sympathetic personality. She assumes responsibility quickly and responds to the needs of others. This is because she is highly aware of the needs and motivations of others. Delenn can find the potential in anyone and will assist them in reaching that potential. She inspires others to action.
ENTP (The Inventor) - G’Kar: G’Kar is ingenious and outspoken. He proves resourceful in overcoming new and challenges. He is a skilled strategist who is adept at reading others. He desires stimulation and grows bored of routine. He rarely takes the same course of action, preferring instead to approach each new interest with a different outlook.
ENTJ (The Fieldmarshal) - John Sheridan: Straightforward and decisive, John Sheridan is quick to take the leadership role. John is prompt in finding errors in an organizational structure and equally quick to implement a solution. He sets long-term goals. He keeps himself well informed and enjoys increasing his knowledge and sharing that information with others.
ISFP (The Composer) - Vir Cotto: Vir is timid and kind. He enjoys the present moment, taking in what goes on around him. He likes a private space to work and prefers an open time frame. Vir is committed to his values and is loyal to the people important to him. He dislikes conflict and prefers not to force his opinions on others.
ISFJ (The Protector) - Zach Allan: Inobtrusive and responsible, Zach commits to his obligations. He is sure and steady in meeting objectives. He takes pains to be thorough and efficient. He is loyal to and compassionate with his friends. Zach has a keen eye for specific details about the people close to him. He shows genuine concern for others. He strives for order in all things.
ISTP (The Crafter) - Kosh: Kosh is a silent observer until a problem presents itself. Only then will he act quickly. Highly analytical, Kosh is able to sift through large amounts of data to find the core of the problem as well as the most practical solution. He has a great interest in cause and effect and is able to determine the influence one event has over another. Highly organizational, he values efficiency.
ISTJ (The Inspector) - Na’Toth - ISTJ: Of a serious demeanor, Na’Toth succeeds with sheer thoroughness and dependability. She is practical and matter-of-fact. Na’Toth works decisively and steadily despite distractions. She is quick to assume responsibility and takes comfort in routine. She values orderliness and tradition.
INFP (The Healer) - Dr. Stephen Franklin: Franklin is an idealistic. He is loyal to the people most important to him. He yearns for an external life that most represents his values. His curiosity allows him to find unique possibilities. In a support role he can prove essential in the implementing of ideas. He seeks a greater understanding of people people and wishes to help others fulfill their potential. He can be accepting as long as others do not threaten his system of values.
INFJ (The Counselor) - Lyta Alexander: Lyta looks for the meaning in connections. These may be connection within ideas, relationships, or material possessions. She wants to understand the motivations of people. She is conscientious and commits to her rock solid values. She has a definite vision as to how she can serve the common good. She is absolute when following that vision.
INTP (The Architect) - Jeffrey Sinclair: Sinclair develops logical explanations for everything that interests him. He is theoretical and abstract, showing more interest in ideas than in people. Reserved, yet flexible, he possesses the focus to delve deep into a problem and find the solution. A Skeptical, critical, and analytical thinker
INTJ (The Mastermind) - Bester: Bester has an unique mind and a strong drive for success. Bester easily spots patterns and develops long-range plans to deal with every contingency. When committed to a task at hand, he works hard to devise an approach and carry it through. Fiercely independent and dubious of others, Bester sets high standards of competence, standards even he must strive to reach.
. No wonder my clothes never fit properly. lol 
Warning: Spoiler!