Fireball is set in The MatrixOr better it is set outside of it in the first 'Robotcity' the robots had created.Not only that but Gedächtnis mentions a war that had happened years ago, a battle against humanity.Gedächtnis also mentioned that the city is surrounded by a desert, the city that the robots had built in Animatrix was located in Saudi Arabias Rub' al Khali, which is a large desert.
Drossel is named after Drosselmeyer.I suppose this is just a shot in the dark, but come on! A famous character who develops a lifelike puppet. It can't be a coincidence, can it?
- Or perhaps another Drosselmayer...
Gedachtnis is an Evil Chancellor.Instead of grooming Drossel to succeed her father, he keeps her confined to the mansion and occupied with an endless stream of trivial diversions, with pains taken to keep her ignorant of matters of state while he rules the robot empire himself as a Regent for Life.