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| Aflevering | Eerste uitzending |
|---|---|
| S04E01 - Brainwashed (1): Brain, Brain, Go Away | 14/09/1998 |
| S04E02 - Brainwashed (2): I am Not a Hat | 15/09/1998 |
| S04E03 - Brainwashed (3): Wash Harder | 16/09/1998 |
| S04E04 - To Russia with Lab Mice | 21/09/1998 |
| S04E05 - Hickory Dickory Bonk | 21/09/1998 |
| S04E06 - The Pinky and the Brain Reunion Special | 21/09/1998 |
| S04E07 - A Legendary Tail | 28/09/1998 |
| S04E08 - Project B.R.A.I.N. | 28/09/1998 |
| S04E09 - Star Warners | 14/11/1998 |