Ororo was the 3rd Allosaurus to be unleashed by Ururu in Dinosaur Great War Izenborg Ep.10: "A Rescue Operation of a Dying Girl!". Besides burrowing through the ground, he's only other ability was spewing smoke and fire an energy beam from its mouth, as well use hypnosis; through the episode he use a cat as a slave and held a small girl hostage, while trying to destroy a Damn.

Ururu sends Ororo out into Japan to attack a Hydro Power Damn, taking possession of the Pet cat (Kiri) to the daughter (Reiko) of the Damn Chief Operator (Hanata) and holding her as Hostage – D-Squad deploys to the site, but their attempts to do anything are arm-strong by this situation.

They attempt to call the Beast's attention away from the Damn to no avail, and scaring off multiple attempts from Hanata and others to save Reiko; Ai takes the task to rescue the girl, doing so successfully and returns to the IzenOne to continue the fight with Ororo. The group uses a Special Missile that contains Sleeping Powder, but the effect is temporary, as Ururu likely sent a Psychic Boost and Ororo wakes up to continue try to break the damn.

Quick Note: Its able to break through miles of rock and dirt that has been compress for millions of years on its way to the surface, but has a hard time trying to bring down a structure of Concrete and Steel that is holding tons of water that took humans half a decade to build – love these contradictions. Also, the scene of how they try to make Ororo sleep is hilarious; close up of the Dino's face - Boy was totally Vaping.

Ai rejoins Zen in IzenOne and they Cross – the battle with Ororo is short, been able to kill the Allosaurus in one of the weirdest moves seen; they stab it with the Driller but no full ripping through the guts as usual, reverse it, then they come in full speed with the Izen Firebomb, where they spin around the monster and its literally deleted/burn from existence; a furious Ururu vows revenge.

D-Squad is thanked by the locals and Damn workers, with Reiko's cat, Kiri, now back to normal, and return to base.