Klaxosaur

 (, Kyoryuu) is a biological weapon created by the Klaxo sapiens in DARLING in the FRANXX.

Overview
Klaxosaurs often appear as dragon-shaped or dinosaur-shaped machines. Each Klaxosaur seen to date has armor of a black coloration and glowing blue highlights. They exhibit an instinctual attraction to magma energy, which they presumably feed on. Klaxosaurs seem to be capable of mating, or otherwise merging with humans, as Zero Two is stated to have Klaxosaur blood. The method in which this occurs is yet to be seen. A Klaxosaur will die if its core is lost. As shown in Episode 15, the core of a Klaxosaur contains what resembles to be a human in a fetal position. Following, in Episode 20, it is revealed that they are piloted by both a male and female Klaxo sapien.

Classes
Klaxosaurs are categorized by their size. Each class is named after the discontinuities inside the Earth.
 * Conrad-class (コンラッド級): small Klaxosaurs. Even smaller than a FRANXX. Presents not much of a threat. They move quickly, rely on strength in numbers and can merge to create a bigger Klaxosaur.
 * Mohorovic-class (モホロビチッチ級): medium-sized. Can pose a serious threat to the plantations if left unattended but otherwise harmless.
 * Gutenberg-class (グーテンベルク級): large, intimidating and demoralizing to look at. Their siege weapons are capable of destroying plantations. Requires a joint operation to defeat.
 * Super Lehmann-class (超レイマン級): gigantic Klaxosaurs, having at least the size of a plantation. They are to plantations what scissors are to paper and can withstand an entire plantation exploding in their face. Requires an army and a massive amount of effort to defeat.

Etymology
Kyoryuu uses the kanji for scream and dragon.

Klaxosaur is a portmanteau of klaxon, a loud electric horn, and the suffix -saur, which is used to describe lizards, particularly ancient ones such as dinosaurs.

Episode 01
When Ichigo and Goro were about to ceremonially pilot the Delphinium and Hiro struggled to step on the next plant, a mohorovic class suddenly emerged from the ground near Plantation 13. Dr. FRANXX and Zero Two noticed the Klaxosaur was approaching when they saw the mist. It crushed Naomi's plant. It is a large theropod with a horn. Its long tail can be transformed to blow strong wind. It has a cannon inside the mouth. It was faint a while after the first round of combat. In the second round of combat, Strelizia was able to lift and throw the Klaxosaur. Later, the Klaxosaur was killed by Strelizia, exploded, and caused a rain of blue blood. The blue liquid seems not harmful to anyone. Its skeleton remained after the flight.

Gallery
Klaxozaury