Possible Clues:

• Sir ___ Belch of 'Twelfth Night'
• Punch to have such a dog
• Jug that resembles a stout man
• Punch's dog in play involving bishop
• Kunta Kinte's slave name, in "Roots"
• The dog would be a mug to get by to jug
• Michael's nemesis on "The Office"
• Mug variety
• Shakespeare's Sir ___ Belch
• Play about black man in jug