Also , they could show a change in a characterâ s appearance , for example , Oedipus after blinding himself . p70 Unique masks were also created for specific characters and events in a play , such as The Furies in Aeschylusâ Eumenides and Pentheus and Cadmus in Euripidesâ The Bacchae . Their variations help the audience to distinguish sex , age , and social status , in addition to revealing a change in a particular characterâ s appearance , e.g. Oedipus after blinding himself Unique masks were also created for specific characters and events in a play , such as The Furies in Aeschylusâ Eumenides and Pentheus and Cadmus in Euripidesâ The Bacchae .