 The Riddler and the Mole Hill mob blast a hole through the floor and make ready to steal the priceless pachyderm when Batman and Robin leap out from inside the elephant and subdue the mob; whilst The Riddler runs for the man hole and leaps into it.Batman leaps after him, and Riddler shoots at him, misses, and hits a tank of noxious oxide causing it to explode, but not before Batman takes cover.The Riddler's body isn't recovered, so it's assumable he will live to plague Gotham City another day, but not if Batman and Robin can help it.