Unique masks were also created for specific characters and events in a play , such as The Furies in Aeschylus ' `` Eumenides '' and Pentheus and Cadmus in Euripides ' `` The Bacchae '' .
Also , they could show a change in a character '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 Aeschylus ' `` Eumenides '' and Pentheus and Cadmus in Euripides ' `` The Bacchae '' .