Read more about Nirvash Type ZERO at: Wikipedia

Official Site: Bones

The mecha in the anime series Eureka Seven are called LFOs, which stands for Light Finding Operation. LFOs are bio-mechanical hybrids: armor and control systems are built upon an organic humanoid "skeleton" excavated from the Scub Coral. The LFOs in the series are primarily used by the military as an all-purpose assault unit, capable of engaging targets in both ground and aerial combat. Military LFOs are dubbed KLFs, which stands for Kraft Light Fighter.

LFOs use trapar-based propulsion, using ref boards to ride trapar waves in the same manner as the sport of lifting. On the ground, most LFOs are able to switch between their humanoid forms and wheeled vehicle forms to make trips easier; this also has the added benefit of allowing quick travel where the trapar waves are too weak to ride. This wheeled form also allows them to take off in a manner somewhat similar to an airplane. Those with vehicle forms are usually launched in that form and convert to their humanoid forms once airborne. In cases where no vehicle form is available, a special catapult is usually required.

The sequel series Eureka Seven: AO introduces a new type of mecha, the IFOs, which stands for Intelligent Flying Objects, that despite being only mechanic in nature, work in a similar manner than the LFOs and KLFs, although with reduced capability.

The type ZERO, along with its pilots Eureka and Renton, is something of a visual symbol for the first Eureka Seven series, and the LFO itself is complicit in many of the series' mysteries. The Nirvash type ZERO was the first archetype discovered, and the LFO created from this archetype was the base model that many other LFOs were designed around. Both versions of the Nirvash's outer shell were created by the scientists at Tresor, and both ref boards were created by Axel Thurston.

Nirvash Type ZERO has not been a contender in any CBUB matches.