Kevin Grady lived with his father Lawrence, a medical doctor at the Summerholt Institute, and his brother Dillon in Smallville. On a hunting trip, Dillon got shot by his father. Lawrence Grady subjected Kevin to a memory-alteration treatment at the Institute in order to make him believe that he had shot his brother. This treatment had a side effect of providing Kevin with an ability to erase other people's memory.

Kevin broke out from Summerholt Institute and stole some money from the Talon in order to be able to leave Smallville. As Clark Kent wanted to prevent him from fleeing, Kevin wept his memory. He later told Clark that people normally only forgot the last few minutes, but Clark could not remember anything from his birth on.

Chloe hacked the computer of the Summerholt Institute and sent some video files to Lois and Clark from which they learned about Kevin's memory treatment. Clark then helped Kevin remember that he was not guilty for the death of his brother. Together, they broke into Summerholt Institute where Dr. Grady was about to subject Chloe to the same memory treatment as Kevin had received in order to make her forget what she found out. Clark absorbed the radiation that was intended for her, thereby restoring his own memory. However, this overloaded the equipment, and two large pillars fell upon Chloe. When Clark catched the pillars and threw them aside, he was watched by Kevin, Chloe and by Lois and Sheriff Adams who had arrived in the meantime. Kevin erased the memory of the three in order to keep Clark's secret. He then said goodbye to Clark and left.


Kevin possesses an ability to erase the last few minutes of someone's memory. However, in the case of a Kryptonian, Kevin's power causes complete memory loss.

  • Kevin Grady was portrayed by Jonathan Bennett.



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This character is exclusive to the continuity of the Smallville television series. This template will categorize articles that include it into Category: Smallville Characters.