Here is a list of all the characters. It is similar to the play, but all the characters are a BIT different...

Capulet

Sampson- Servant of Capulet likes to chew fingers
Gregory- Another servant of Capulet. Is afraid of blood
Sarah- Everyone calls her Juliet for no apparent reason. Lives leather and candy
Tybalt- Hot headed cousin of Sarah
Capulet- Head of the Capulet house
Lady Capulet- Capulet's wife
Nurse- Really oblivious nanny to Sarah
Peter- Servant to Nurse, Really a useless person

Montague

Abraham- Servant of Montague. Takes things literally.
Balthazar- Romeo's servant
Benvolio- Band-aid king of the world. Is often seen holding and offering band-aids.
Romeo- Really dense son of Montague
Montague- Head of the Montague house
Lady Montague- Wife of Montague
Mercutio- friend of Romeo and kinsman of Prince Escalus. Really temperamental.

Others

Prince Escalus- Ruler of Verona. Has REALLY big wobbly hat and speaks with a southern accent.
Rosaline- Romeo's first love
Paris- Loves Sarah. Is really handsome, but always wears dark clothing. Is suspected of being Count Dracula
Musicians/Trumpet Players- Plays music that's really off tune
Friar Laurence- Is obsessed with creating things and bringing the dead back to life. (Frankenstein)
Friar John- Same Friar John in Robin Hood. Is summoned to Sherwood Forest.
Apothecary- Really poor guy. Poor thing...