Who is Dr. Eggman's grandfather in Sonic Adventure 2?

Who is Dr. Eggman’s grandfather in Sonic Adventure 2? Gerald Robotnik.

Dr. Eggman’s grandfather in Sonic Adventure 2 is Professor Gerald Robotnik. Gerald was a brilliant scientist whose research at the Space Colony ARK produced Shadow the Hedgehog and the Biolizard, an early Ultimate Lifeform prototype.

Eggman learns about the ARK and its secret weapon through Gerald’s diary. He then infiltrates a G.U.N. facility, awakens Shadow, and uses the information to pursue his plan for global domination. Gerald’s scientific legacy is therefore the trigger for much of the game’s plot.

Gerald’s story is also tragic. G.U.N. shut down the ARK’s research after a disaster and killed researchers, including Maria Robotnik, Gerald’s granddaughter. In retaliation, Gerald secretly programmed the ARK to fall toward Earth if the Eclipse Cannon was activated.

A frequent confusion involves the names Robotnik and Eggman. “Gerald Robotnik” is the character’s name in the game’s English localization, while “Dr. Eggman” is the familiar name used for his grandson. Professor Pickle, by contrast, is an entirely different character from Sonic Unleashed.