Ну как бы вот кусище правил. Ничего подобного про зелёных монстров там нет.
Цитата:
5. Newly explored rooms always have a monster! Draw the top
Monster card and find the monster’s standie. Roll the Monster Die to see
what color its base is (the player of that color gets a DxM). If no bases of
the rolled color are available, you get to choose the base – but the player
of the chosen color does not get a DxM! If no bases at all are available,
the highest-level monster (counting enhancers) is removed from play, freeing
a base for the new monster. If there is a tie for highest level, remove all
tied monsters! This means that the maximum number of monsters in any
game is 3 times the number of players.
Automatic Monsters
When all the rooms have been explored, the monsters have
nowhere left to lurk. At that point, if you enter a room with no
monsters during your turn, you may draw a Monster card (see
p. 6) if you want to. This does not cost a Move.
6. Start combat! See Combat, p. 8.
When there are no room tiles left, the dungeon is fully explored. All
links on the edges are treated as Walls by munchkins,
because the GM has not yet created the rooms on the other
side. Monsters can still move through those links (see
Monsters Leaving the Board, p. 13).
После врезки Автомонстров сразу идёт шестой шаг разведования новоой комнаты. Так что нужно спрашивать у переводчиков откуда они это взяли.