Rick Turpentine is a former highwayman. To atone for his past actions, he may give you a couple coins and a random food or valuable item (i.e. kebab, spinach roll, ruby, Loop half of key, Cosmic Talisman). Previous to the random event update, If the player ignored him, he would attack while taking the player's coins. Turpentine's entrance is announced by his saying "Greetings, milord/milady <your name>!" Rick Turpentine shows up with a cape that is strikingly familiar to a purple Fremennik cloak. The exact date this started is not exactly known, but as far as anyone can tell, it was during mid-March 2007.
Rick Turpentine is likely based on Richard Dick Turpin, an 18th century English highwayman who was executed and romanticised as dashing and heroic after his death, becoming the subject of numerous ballads and plays.
Rick Turpentine is an anagram for "Turnpike Cretin", which would describe a nefarious highwayman.