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|Interests:||Drinking virtual English tea|
|Aliases:||Karen's father, Karen's dad, Fred|
|Children:||Karen Plankton (daughter)|
|Other relatives:||Sheldon J. Plankton (son-in-law)|
|Enemies:||Sheldon J. Plankton|
|First appearance:||December 2009 issue of Nickelodeon Magazine|
|Latest appearance:||December 2009 issue of Nickelodeon Magazine|
|List of characters|
Fredrick is Karen's father, only shown in the December 2009 issue of Nickelodeon Magazine. The character is disapproving and does not think Karen should have ever married Plankton. His interests and hobbies include drinking virtual cups of English tea and saying "I disapprove of this."
Fredrick is a grey old fashioned computer. He has a black screen with green-yellow eyes and a green-yellow mouth.
Fredrick has only appeared in the December 2009 issue of Nickelodeon Magazine.
- It is unknown if he will appear in any episodes in the future.