Possible Clues:

• Mischievous or cheeky person
• Asian sailor switching sides, first and last, is such a scoundrel
• Artist to counsel a learner, a naughty one
• Scoundrel, rogue
• Rogue, Ethiopian prince, still not married
• Horror of painter, having short climb
• Part of Clytemnestra's calling for deceitful character
• A scoundrel or a scallywag, to some extent
• Heel
• Some take him for a scallywag -- rightly!