Robotnik Sr. was born on Mobius under name John Smith (because nobody had this name before). His father was the King of Mobius and his mother was a professor of nuclear physics. John Smith recieved PhD in the age of ten and changed his name to Robotnik I. In the age of fourteen he moved to Earth and collided Mobius with it. (Currently Mobius is a part of Earth, located between Mushroom Kingdom and Hyrule).
For this collision Greatest Court of Earth (with Adolf Hitler in the head) wanted to execute Robotnik I, but instead he built the half of The German Prison (other half was built by Indiana Jones). After this Robotnik I moved to Soviet Russia.
Six years later Momma Robotnik and Dr. Robotnik went away from Robotnik Sr. due financial problems, caused by RobotnikClause. Because of this he had to raise RobotnikClause alone.
Currently, the location of Robotnik Sr. is unknown. Many people are speculating that he is building the Death Star over Robotnik's HQ (watching for his son).
- Gravity Gun that can throw planets
- Invisibility Machine (currently lost)
- Death Egg
- Death Star
- Metal Sonic
- Heavy Metal Sonic
- Heavy Metal
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