| A | B |
| Caecilius | father, banker, and businessman in Pompeii (pater et argentarius) |
| Syphax | slave-dealer (venalicius) |
| Pantagathus | barber (tonsor) |
| Celer | painter (pictor) |
| Cerberus | dog (canis) |
| Clemens | slave who works in the Caecilian home (servus) |
| Grumio | cook in the Caecilian home (coquus) |
| Hercules | hero painted on the wall of the Caecilian dining room (heros) |
| Pandora | slave girl who sings sweetly in the Caecilian home (ancilla) |
| Melissa | slave girl whom Caecilius buys from Syphax (ancilla) |
| Metella | mother (mater) |
| Hermogenes | dishonest Greek merchant (mercator) |
| Quintus | son (filius) |
| Groma | prison guard who looks after Hermogenes in jail (custos) |