| A | B |
| Eliza | poor flower girl; loud, independent; very strong cockney accent; part of Henry Higgins' experiment to "make her speak like a lady" |
| Colonel Pickering | author of Spoken Sanskrit; loves phoenetics; is always kind, considerate gentleman; treats Eliza like a lady at all times |
| Professor Henry Higgins | author of Universal Alphabet; loves phoenetics, believes in visible speech and makes recordings of people talking; bully, impatient, impolite, rude but deep down good hearted |
| Mr. Doolittle | Eliza's father; has been married six times, drinks way too much and is always looking for money; very questionable morals/ethics |
| Mrs. Higgins | Henry's mother; she is very kind; tells Henry no good will come of his "experiment"; when things fall apart, everyone goes to her for advice |
| Mrs. Eynsford-Hill | Freddy's overbearing mother |
| Freddy | jello-spined young man who is pushed around by his mom and sister; he falls in love with Eliza |
| Nepommuck | Higgins' former student; translator; self-proclaimed linguist; at the Embassy Party, he says that Eliza is a Hungarian of royal blood |