The slave of Lyconides was such a slave, as he sat on the altar outside the shrine of Fides when he overheard Euclio discussing his gold. So this slave is another common stock figure used both in literature and in art. These statues not only show characters, but they also show costumes of the characters. This mask clearly shows the exaggerated facial expression and wig for the character. As this statue shows the costume for the character, it also shows exaggerated motion.
Sculpture representing people often carries some feeling of motion with it.
If the actor were up on stage representing a character, the actor would be physically portraying the character. Statues of actors representing theater must also carry with it this motion and action because it is an integral part of the character portrayal. Motion was often choreographed and statues of actors represent this action. This statue could represent Megadorus as he is relating his thoughts on dowried daughters to the audience in lines 475 through 495. While Bieber is contrasting Greek and Roman art in this statement, the idea that literature and art are consistent with each other is inherent.