Many opera villains, traditionally Crossword Clue

 The answer to the crossword clue "Many opera villains, traditionally" is BASSES. This is because the lowest male singing voice is the bass, and it is often used to portray villains in opera. This is because the bass voice is often associated with power, authority, and danger.

Some of the most famous opera villains who are sung by basses include:

Don Giovanni, from Mozart's Don Giovanni

Scarpia, from Puccini's Tosca

Mephistopheles, from Gounod's Faust

Boris Godunov, from Mussorgsky's Boris Godunov

Wotan, from Wagner's Der Ring des Nibelungen

Of course, not all opera villains are sung by basses. There are also many opera villains who are sung by tenors, baritones, and even sopranos. However, the bass voice is still the most common voice type for opera villains.

I hope this helps! Let me know if you have any other questions.