Zirconiade Zirconiade is the final boss of " Before Crisis - Final Fantasy VII - " . A so - called " Ultimate Summon " also called the " World Burner " , Zirconiade ' s summon Materia is so powerful it needs four support Materia to be fully summoned into the world , which were hidden around the Planet long ago . Fuhito , AVALANCHE ' s demented scientist and former apprentice to Bugenhagen , seeks the support Materia and plans to summon Zirconiade to eradicate all life on the Planet returning all the world ' s spiritual energy to the Lifestream so the Planet could heal from the influence of the Shinra Electric Power Company . Story . At an unspecified point prior to " Before Crisis " , Professor Hojo , desiring to test the applications for grafting Materia onto human flesh , implanted Zirconiade ' s Materia into the hand of Felicia , a young girl who had been taken from the ruins of Kalm , which had then recently been bombed by Veld and the Turks . Though the procedure was successful Zirconiade could not be called because the support Materia were not present , so Hojo misjudged Felicia a failure unable to use the Materia and ordered her disposed of . An amnesiac Felicia survived and wandered the Planet eventually being taken in by AVALANCHE and made their leader , taking the name Elfé . Though the implantation of Zirconiade grants Elfé enhanced physical abilities , it drains her life force in an effort to gather the energy to manifest itself . Several years later , Fuhito and AVALANCHE begin seeking the four support Materia needed to use Zirconiade ' s Materia . Veld , dismissed from his position due to being suspected of treason , discovers Elfé is Felicia and believes that if the Zirconiade Materia is united with the support Materia the Materia embedded in Elfé will stop draining her life . Shears , Elfé ' s second - in - command , is betrayed by Fuhito , and works with Veld to find the Materia wanting to protect Elfé . Discovering Veld and Elfé ' s pasts and rejecting their orders to assassinate Veld , the Turks defect from Shinra , cooperating with Veld and Shears to find the support Materia before Fuhito . In Corel Shears finds the first support Materia in the town ' s Mako Reactor when the Turks arrive to protect the town from AVALANCHE . The reactor collapsing , Shears entrusts the Materia to the player ' s Turk as they flee the reactor . The second support Materia is found in Gongaga ' s reactor with the aid of Reeve and Cait Sith . The third support Materia is found in Shinra Manor with the aid of Vincent Valentine . The final Materia is located at Corel Prison , and is seized by the Turks , but in the process Veld is captured by Shinra executive Scarlet , Fuhito having kidnapped the president ' s son , Rufus Shinra , who was secretly aiding the Turks , and President Shinra plans to exchange Veld for Rufus . The Turks head to Midgar to rescue Veld , and Fuhito and AVALANCHE invade the city to track down the Turks and seize the support Materia . Using Elena as a hostage , AVALANCHE claims the support Materia the Turks hold while the Materia given to Shears for safekeeping is taken by Fuhito . On the highways out of Midgar , the Turks find Fuhito and AVALANCHE summoning Zirconiade , the summoning incomplete because Zirconiade needs more energy . As the player Turk and Fuhito fight , the five Materia pieces react to each other , the Materia in Elfé removing itself from her body and the five Materia shards fusing into one . Fuhito seizes it and rushes to the site of Zirconiade ' s summoning to complete the summon . The Turks pursue Fuhito into Midgar as he attempts to get to the site of Zirconiade ' s appearance . Fuhito inserts the complete Zirconiade Materia into his own body and offers himself as a sacrifice to complete the summon . Fuhito is transformed by Zirconiade ' s power , but is defeated by the player ' s Turk , Shears intercepting a lethal attack on them attempted with Fuhito ' s last strength . Though Fuhito is killed , Zirconiade manifests and the Turks head to find it , battling monsters spawned by Zirconiade that invade Midgar . Transported into a pocket dimension , the Turks destroy Zirconiade by unleashing a Limit Break , saving the Planet . Though Zirconiade is destroyed it is discovered its summoning had an unexpected side - effect . Sensing a threat the Planet reacted to Zirconiade ' s summoning by releasing a Weapon , Jade Weapon , to destroy it . With Zirconiade being destroyed by the Turks Jade Weapon begins hunting the Turks , judging them too powerful to be left unchecked . Gameplay . Zirconiade is fought as the final boss . Etymology . Zirconiade ' s name is likely derived from Zirconium following the naming pattern of Weapons in " Final Fantasy VII " .