Archetypes

The characters in any allegorical story are often used to symbolise certain concepts. These may be types of people (stereotypes); a group or organisation; a part of the mind; a power or force; etc.
 
Below are a list of the main characters in the film and what they symbolise.

Commander Lock

Jason Lock is Niobe’s current partner and the commander of Zion’s military forces.

He is a typically militaristic, left brain thinker, only capable of thinking in straight lines. He is a total control freak, and resents Morpheus’ disobedience. He really doesn’t get right brain thinking at all and although he has essentially won the prize (Niobe), he is very insecure around Morpheus, who is completely unphased, by his authourity. Secretly, he knows Morpheus is the better man and a better leader (as indicated by his speech at the beginning of the Zion party).