The LEGO Batman Movie set 70903, The Riddler Riddle Racer, is a complete set featuring 254 pieces made of plastic. Released in 2017 as part of the LEGO Batman theme, this set includes characters like The Riddler, Magpie, Calendar Man, Batman, and Kite Man. The set is designed for ages 7-14 and comes in a new sealed box, making it a valuable addition to any LEGO or Batman fan's collection.