Possible Clues:

• Artist's style almost becoming rogue
• Little mischief-maker
• Rogue artist's beginning to collude with gangster
• Untrustworthy one
• Bounder
• Mischievous type, Oriental sailor switching directions
• Mischief-maker, a scallywag to some extent
• Bad lot included in Cleopatra's calculations by Haggard
• Ultimate in misbehaviour when class briefly admits a naughty child
• Wily sort