Assassin Bug (fan expansion for Hive) (2015)

The Assassin bug moves one space around the Hive. Or, instead it can use its special ability to remove an adjacent enemy piece that's not in a stack. To do this it moves on top of the enemy piece permanently removing both the enemy piece and the Assassin bug from the game. The Assassin
bug cannot remove a piece your opponent has just moved or flipped.