Related Clues:

• Parasite's need
• Ball thrower
• Rapper
• Intro giver
• Banquet official
• Show-runner
• Big number
• Maker of introductions
• Handler of introductions
• ''And now ...'' sayer
• Party throwing a party
• Mic holder
• Comedy club host
• Host a roast, say
• Leno or DeGeneres, e.g.