Grandpa O'Reilly | |
Profile | |
Gender | Male |
Species | Human |
Family | Dextamina (sister) Dexter (grandson) Dee Dee (granddaughter) Dad (son-in-law) Mom (daughter) Fergle O'Reilly (son) Unnamed daughter |
Interests | Science |
First Appearance | The Grand-Daddy of All Inventions |
Voiced By | Christine Cavanaugh |
Grandpa O'Reilly is Dexter and Dee Dee's maternal grandfather, Dextamina's younger brother, and Mom and Fergle's father. He was voiced by Christine Cavanaugh.
Biography[]
Just like his grandson Dexter, he also has a laboratory, as shown in The Grand Daddy of All Inventions. However unlike Dexter's massive and high tech lab, his was a small space in his garage. Grandpa is also implied to be smarter than Dexter since, with a relatively simple set up he was able to create a self sustaining power source, which Dexter failed to do with his complex machinery.
Episode Appearances[]
- Old Man Dexter (Mentioned)
- The Grand Daddy of All Inventions (Official)
Trivia[]
- He is Mom's father since Mom refers him as "Dad".
- His design is identical to Dexter's future self, Old Man Dexter, indicating that Dexter inherits both his looks and genius from his grandfather.
- His only official appearance was in the episode The Grand Daddy of All Inventions however, he was mentioned in the episode Old Man Dexter.
- It is unknown what type of relationship he has with his son, sister, and other daughter.