Professor Ludwig von Tökkentäkker is the main antagonist, and final boss, of the arcade rail shooter "CarnEvil". He is the ringleader of the dreaded carnival, and mentioned in the game's "attract mode", where in a graveyard in Iowa, his tombstone holds a token. The token can bring CarnEvil out of the underworld. After the player (or players, depending on if one or two people play) manage to get through the first three areas (Haunted House, Rickety Town and Freak Show), they will gain access to the main area: the Big Top.