'Ophelia' is an important character of ______ which was written by William Shakespeare.

Ophelia in William Shakespeare's drama ‘Hamlet’, is a young noblewoman of Denmark, the daughter of Polonius, sister of Laertes, and potential wife of Prince Hamlet.

Characters of William Shakespeare's tragedy ‘Hamlet’ are:
- Hamlet,
- Gertrude,
- Horatio,
- Ophelia,
- Claudius,
- Laertes etc.

Source: Britannica