His host is Haruki Natsukawa, one of the STORAGE members. Z bonded with Haruki after he died figting Genegarg with Sevenger. His first form is Ultraman Z Alpha Edge with the Ultra Medal Zero, Seven, and Leo. Z received the medals and Ultra Z Riser from Ultraman Zero before he got thrown to four-dimensional space by Bullton.
After the battle, 3 Ultra Medals scattered around and a medal, Ultraman Ultra Medal, is taken by Yoko Nakashima, a member of STORAGE team, while Haruki only found 2 medals, Taro and Ace.
His partner is Riku Asakura or Ultraman Geed, previously his Geed Riser got broken while fighting Gillvaris at Planet Ain, Pega came quickly and gave the Ultra Z Riser and the New Generation Medals from Ultraman Hikari, allowing him to transform into Ultraman Geed Galaxy Rising with Ginga, X, and Orb Ultra Medals.
While Haruki and Riku fought together at Earth, Zero is still trapped in the four-dimensional space and escape with using Shining Star Drive and went to Z's Earth to help Ultraman Z to destroy the Devil Splinters.
While Z borrows Haruki's body, Riku is abducted to extract the Belial Factors in order to create Belial Ultra Medal. After that, Shota Hebikura or Jugglus Juggler, went to help Riku. He also told Riku not to mention about him to the others. After Z borrows Haruki's body, Hebikura told Haruki to keep Riku to a protected place. After that, Riku and Haruki transformed to fight 3 Belial Fusions, Thunder Killer, Skull Gomora, Pedanium Zetton with Zero.
Haruki then went to Karate Training with Yoko, and still, Haruki loses. After Haruki, Yuka then went to training with Yoko and Yuka also loses. After that, a Tri-King appeared, the main body before Five King. When Haruki is about to transform, he dropprd his Ultra Z Riser nowhere. He can't transform for awhile. When Yuka and Yoko went to minimarket, they found Haruki's Ultra Z Riser. They had a plan to research the Ultra Z Riser in order to discover Ultraman Z's secrets, but they got abducted by two Alien Pitts that got manipulated by Celebro or Shinya Kaburagi
After that, they got tied and got asked by those aliens. Haruki came and let them free. Yoko and Yuka fight those aliens, while Haruki took his Ultra Z Riser. Z blamed Haruki why he left Z. After that, Haruki transform into Ultraman Z Alpha Edge, then the battle begin
After a moment, Z changed form into Beta Smash. Because Z is overpowered, Celebro with Tri-King changed form into Five King by inserting Gan-Q medal. Hebikura or Juggler can't see Z lose this time. So he threwed the 3 medals, Tiga, Dyna, and Gaia. Haruki is confused about who gave them the medals. So Haruki immediately uses the medals and transformed into Ultraman Z Gamma Future and defeated the Five King.
Ultraman Z Forms :
Ultraman Z ( Default Form)
Ultraman Z Alpha Edge
Ultraman Z Beta Smash
Ultraman Z Gamma Future
Ultraman Geed Galaxy Rising
