Lute

Lute is a bad guy from Dragon Ball GT and also an instrument i think

That is correct!

Notice that guitar lying around? That's a lute. The ukulele your friend had in elementary school is a lute. Even the entire violin family comprises a herd of bowed lutes.

History

The instrument most commonly associated with the word "lute" is the European lute, derived from the Middle Eastern oud. It was a popular pick during the Middle Ages and Renaissance, and could be used as a solo instrument or in an ensemble.