The Man Returns!

is the sixth episode of Ultraman Z.
==Synopsis==
A certain man has returned to Earth. His name is Riku Asakura, and he's the young man who transforms into Ultraman Geed. However, he's not the only one who has come to Earth. The Last Judgmenter Gillvalis, who once tormented Geed, has returned to Earth once again! Don't look away as our two brave heroes face down an unprecedented crisis!
==Plot==
STORAGE members conducted a test of operational time by pitting two SAA units; Sevenger/Haruki and Windom/Yoko against each others. Hebikura picked up the reading of a mechanical life form approaching Earth and was surprised to see it as Gillvalis, quickly ordering all STORAGE members to evacuate the site. Despite Sevenger and Windom's attempt at intervention, the former was briefly hijacked into almost launching its fist at the remaining personnel. A giant who Hebikura is familiar with appears as well where he managed to defeat Gillvalis and pursue the fleeing Core.
Kaburagi attempts to use the Devil Splinter in harvesting a particular medal, but it vanishes since the essence was not enough. While trying to contact Pega without much success, the young man was approached by Hebikura, and the two recognizes each other as Riku and Juggler from their previous fight against Gillvalis. Riku participated in recovering the Devil Splinters in outer space, but while fighting Gillvalis on Planet Ain, his Geed Riser was damaged from fending off against the former's beam attack. Pega was able to get the Neo Brittania into providing cover while relaying another Z Riser from Ultraman Hikari as compensation. He was separated from Pega while chasing Gillvalis to a Earth different from his birthplace. Juggler however tells him that STORAGE will solve the case on their own. As the Monster Research Center cleaning up the Perfect Form body left behind by Gillvalis' Core, Kaburagi salvaged another Devil Splinter from its remains.
Reports of silicone monocrystal theft reach the STORAGE headquarters and the team found out that Gillvalis was stealing them to repair his integrated circuits. Yuka baits it with a fake intel in the internet, but before Haruki can attack, Riku appears to hit it with a metal pipe. Yoko/Windom try to capture the probe, but Gillvalis hastily rebuilds its Perfect Form for counterattack. Haruki and Riku notice each other holding Z Risers, but simply goes along to transform. Z quickly recognizes Geed for his contribution against Belial, but his praising was cut short to fight the robot. Using the unanswered Millennium Prize Problems, Yuka had Yoko use Windom to transmit the formulae into Gillvalis, overloading the AI and allowing Z and Geed to finish both the Perfect Form and its Core once and for all.
Haruki and Riku formally introduce each other as Riku explained that the Devil Splinters are scattered fragments of Ultraman Belial through his countless battles and rampages across the universe. As Riku asks Zero's whereabouts, the Ultra in question is still imprisoned in Bullton's dimensional subspace and slowly losing his strength. Unbeknownst to the two, Kaburagi watches them from his Fake Hero's Gate and assemble an army of robots.
===Haruki's Ultra-navi===
*Haruki: Haruki's Ultra-navi! 'Kay! Today we're showing this!
*Z Riser: Ginga.
*Z: Ultraman Ginga! His different attacks make the crystals on his body glow in various colors!
*Z: Next up is...
*Z Riser: Belial.
*Haruki: Ultraman Belial. He's a corrupt Ultraman whose fragments are causing chaos across the universe.
==Ultraman Z and Ultraman Zero Voice Drama==
After fighting Kaiju affected by Devil Splinters, Zero returns and tells Z about a new device developed by Ultraman Hikari. Zero tells Z that he will be chosen for testing the device and giving its name.
==Cast==
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===Voice Actors===
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===Suit Actors===
*Ultraman Z: 
*Sevenger: 
*Windom: 
*Ultraman Geed: 
*Ultraman Zero: 
*Gillvalis: 
*Pega: 
==Appearances==
===Ultras===
*Ultraman Z
**Alpha Edge
**Beta Smash
*Ultraman Geed
**Primitive 
**Ultimate Final 
**Galaxy Rising
*Ultraman Zero
*Ultraman Orb 
*Ultraman Taro 
*Ultraman Belial 
===Kaiju===
*Windom
*Sevenger
*Gillvalis
*Alien Pegassa Pega 
*Valis Raider
==Trivia==
*While surfing on her tablet for the Millennium Prize Problems, it displays the Riemann hypothesis, one of its six unanswered questions. Yuka also said that solving them means receiving additional fund for the third SAA unit, paralleling how each solved questions will be promised with a reward of 1 million USD (106,125,500.00 Japanese Yen as of June 26, 2020) to the responsible institute.
*This episode uses flashback scenes from Ultraman Geed The Movie: Connect the Wishes!. Additionally, voice actor Katsuyuki Konishi was credited for Gillvalis' voice actor in this episode due to said scenes.
*The battle between Taro and Belial in Mega Monster Battle Ultra Galaxy: The Movie was retconned in this episode to show that Taro hit Belial with the Strium Beam, though Belial actually managed to dodge it in the movie.