Strelizia

Strelizia (ストレリチア) is a specially-made FRANXX mecha, and its female pilot is Zero Two. There has been three known male pilots for the FRANXX: an unnamed pilot who was heavily injured and later killed due to Zero Two's dangerous piloting; Hiro, who was presumably able to pilot it when he rode it; and Mitsuru, who was able to successfully pilot it but later got heavily injured.

Appearance
Strelizia is a large robot with a body colored white, orange, and red. It has large shoulder pads, with feet styled like red heels. It has a pair of long orange strands resembling hair on the sides of its face, with orange eyes. On Strelizia's forehead, there is a long, pointed gray-blue antenna. Strelizia wields a white, red, and orange lance.

History
Zero Two piloted Strelizia with an unnamed male pilot in order to defeat a Klaxosaur, but was overwhelmed and the male pilot was killed during the battle. It crashes close to Hiro, who Zero Two decides to pilot Strelizia with, and they're able to successfully re-activate Strelizia. Strelizia then defeats the Klaxosaur, and then Zero Two comes out of the cockpit with an unconscious Hiro.

In Episode 03, after Delphinium, Argentea and Genista are endangered during when a simple Klaxosaur battle mission goes awry, Nana and Hachi decided to send Strelizia to save them. Although Hiro wants to pilot Strelizia with Zero Two, Hachi denies him from piloting it because he's not an official Stamen. Mitsuru offers to ride it with Zero Two to rescue the three FRANXX mechas, but Zero Two only wants to pilot it with Hiro, but Hiro tells Zero Two to pilot Strelizia with him for just this time and Zero Two reluctantly decides to pilot it with Mitsuru. After a successful synchronization, Strelizia arrives in Level 8 and defeats the Klaxosaurs that were attacking Delphinium, Argentea, and Genista, but Mitsuru is left heavily injured after Strelizia is sent to be retrieved.