The Chaos Effect line, released in 1998, was an exciting and experimental extension of the Jurassic Park franchise, blending DNA from different dinosaurs and modern animals to create hybrid creatures. This line was meant to be tied into a planned animated series, which ultimately never aired, but the toys brought to life these bizarre and dangerous hybrid creations. Each figure in the line featured colorful, exaggerated designs and often came with special action features or capture gear.
Omega T-Rex was a repaint of the Bull T-Rex from The Lost World: Jurassic Park line, complete with roaring action. Its menacing design and oversized appearance made it one of the standout figures in the line.
