The Trinity of Terror are a small group consisting of only three members and enemy to the Offbeats.
The Trinity of Terror was founded when three people met in a bar. After talking for a while they all found that thet had one thing in common: A hatred of Sparky. They had all known him during his pre-Offbeat days and hated him. Having known Sparky they could easily tell that he was the hot headed member of the Offbeats (he doesn't wear a mask, though he justifies this by pointing out that because he's an Australian runaway, no one would know him). So they united through their hatred and have been trying to kill Sparky ever since.