Though ABC canceled the series after two seasons, Mainframe produced a third season (and eventually some TV movies) for Canada which eventually aired on cable in the United States. Without ABC to insist upon stories suitable for young children, the episodes took on darker tones.
When the network canceled the show, the writers dubbed Megabyte's fighter ships "ABCs" and inserted the line "The ABCs - they've turned on us. The treacherous dogs!" in the finale.
This television series was the first to be completely computer animated.
The character Enzo Matrix a.k.a. Matrix is the only one to appear in every episode.
The identity of Mainframe's User was never revealed.
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