Are a floor Mechanism that makes monsters. Any monster type can be generated. These are usually activated by a floor trigger, but can be activated by any trigger.
Number = how many will be generated: 1, 2, 3, or/and 4. Larger monsters that take up more space on the tile will have reduced numbers, eg a dragon can only have 1 (unless smaller dragons are cloned).
Total = the number of times a generation will occur
Health = health of the monster
The generator will pause generating if there is no longer free space around the generator for the new monster