Here is my short analysis on the play:
The list of characters include:
Arlecchino was the most famous. He was an acrobat and a wit, childlike and amorous. He wore a cat–like mask and motley colored clothes and carried a bat or wooden sword.
Brighella, Arlecchino's crony, was more roguish and sophisticated, a cowardly villain who would do anything for money.
Il Capitano (the captain) was a caricature of the professional soldier—bold, swaggering, and cowardly.(my chosen character)
Il Dottore (the doctor) was a caricature of learning—pompous and fraudulent.
Pantalone was a caricature of the Venetian merchant, rich and retired, mean and miserly, with a young wife or an adventurous daughter.
Pedrolino was a white–faced, moon–struck dreamer and the forerunner of today's clown.
The handsome Inamorato (the lover) went by many names. He wore no mask and had to be eloquent in order to speak the love declamations.
The Inamorata was his female counterpart; Isabella Andreini was the most famous. Her servant, usually called Columbina, was the beloved of Harlequin. Witty, bright, and given to intrigue, she developed into such characters as Harlequine and Pierrette.
La Ruffiana was an old woman, either the mother or a village gossip, who thwarted the lovers.
Cantarina and Ballerina often took part in the comedy, but for the most part their job was to sing, dance, or play music.
*This Information was taken from http://italian.about.com/library/weekly/aa110800b.htm
The general plot to the play is:
n spite of its outwardly anarchic spirit, the commedia dell'arte was a highly disciplined art requiring both virtuosity and a strong sense of ensemble playing. The unique talent of commedia players was to improvise comedy around a pre–established scenario. Responding to each other, or to audience reaction, the actors made use of the lazzi (special rehearsed routines that could be inserted into the plays at convenient points to heighten the comedy), musical numbers, and impromptu dialogue to vary the happenings on stage.