TV-Series
Description
Rex Owen, originally Rex Ancient, emerges from a time-travel expedition to the Mesozoic Era, born to paleontologists Dr. Ancient and Dr. Cretacia from 2126. Amid a clash with adversaries Dr. Z and Seth, infant Rex is hurled to the present, discovered in a pod at the Smithsonian by paleontologist Dr. Owen. Adopted and later entrusted to Spike Taylor for stability, Rex grows into a reserved yet intellectually gifted youth, his quiet caution contrasting with best friend Max Taylor’s impulsiveness. Beneath his guarded exterior lies fierce loyalty, especially toward friends and dinosaurs, alongside a poignant attachment to mementos like a trilobite fossil and dinosaur book—objects whose damage sparks temporary rifts mended only by heartfelt reconciliation.

Partnered with Ace, a nimble Carnotaurus embodying Wind elements, Rex masters strategic combat, though the dinosaur’s occasional playful chibi antics challenge his composure. Guided by ally Jonathan, Rex unravels his origins, reuniting with his biological parents during the Mesozoic Meltdown arc to reclaim stolen dinosaur cards and element stones. Aboard the time-traveling Backlander, their mission collides with Spectral Space Pirates, triggering a multitemporal hunt for Cosmos Stones after the D-Team’s parents are kidnapped. A fractured spaceship ultimately strands Rex in 2126, resolving his temporal displacement but severing bonds with Max and Zoe.

Alternate portrayals diverge subtly: as an American transfer student in the manga, Rex initially struggles with language barriers before bonding with Max over a shared dinosaur passion. Their discovery of a fossil, split into friendship necklaces, cements their bond, while his companion shifts to Benjamin, a carnivorous dinosaur unearthed at Alpha Mountain. The DS game mirrors his anime role, casting players as Rex beginning his journey with Ace.

Notable details punctuate his journey—a prominent dinosaur tooth necklace, a June 10 birthday, and veiled tensions with Zoe Drake, hinting at unspoken affection. Dr. Z’s machinations, which displaced Rex’s parents, underscore a life marked by conflict and resilience, culminating in a future where Rex finds belonging in 2126, yet carries the weight of lost connections.