jester

US /ˈdʒes.tɚ/
UK /ˈdʒes.tɚ/
"jester" picture
1.

a professional clown or fool, especially formerly at a monarch's court, who entertained with jokes and tricks

:
The king's jester always had a witty remark for every occasion.
He dressed up as a medieval jester for the costume party.
2.

a person who habitually jokes or makes fun of others

:
He's quite the jester, always making everyone laugh.
Don't mind him, he's just being a jester.