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Season guide

Gravion: Season 1

13 episodes Premiered Oct 8, 2002 Updated Jul 31, 2026

Set in the year 2041, the animated series Gravion follows the Earth's defense against a new enemy called Zeravire, a mysterious alien threat that suddenly appears in the solar system and destroys all military installations it encounters. A wealthy man named Klein Sandman, who was already aware of the planned invasion, secretly prepared his own army for battle. His trump card is Gravion, a giant robot that utilizes gr

Season overview

Set in the year 2041, the animated series Gravion follows the Earth's defense against a new enemy called Zeravire, a mysterious alien threat that suddenly appears in the solar system and destroys all military installations it encounters. A wealthy man named Klein Sandman, who was already aware of the planned invasion, secretly prepared his own army for battle. His trump card is Gravion, a giant robot that utilizes gravity as its source of energy. Meanwhile, a young man named Eiji secretly enters Sandman's base in search of his missing sister. While there, Eiji meets another young man named Toga. Eiji and Toga must now fight together with four other individuals aboard the super robot Gravion to fend off the Zeravire threat, making up a group of six young fighter pilots. The series is classified under animation, comedy, and action and adventure, and originally premiered in 2002.

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Episodes

S1·E1

Fortress of the Diety

Oct 8, 2002 · 25 min

While searching for his missing sister, Eiji Shigure secretly enters the castle of millionaire Klein Sandman. There he meets the castles strange inhabitants and is selected to join

S1·E2

Mission of Gravity

Oct 15, 2002 · 25 min

The newly formed Gravion faces off in their first battle against the Zeravire and the pilots discover their weaknesses. Meanwhile The Earth Federation Alliance plan their own attac

S1·E3

Labyrinth

Oct 22, 2002 · 25 min

Eiji begins to get used to life in Sandman's castle and to the castles inhabitants. As he and Toga venture to the forbidden area of the castle in search of Eiji's sister Ayaka and

S1·E4

The Princess in the Tower

Oct 29, 2002 · 25 min

When a ghostly figure is sighted in one of the castle's towers, Toga and Eiji go to investigate. There they discover Leele, the mysterious pilot of the G-Shadow.

S1·E5

The Girl Who Wouldn't Laugh

Nov 5, 2002 · 25 min

In an effort to get to know each other better, the team goes on a picnic together but Leele is hesitant to share as she is haunted by nightmares of her past. Meanwhile the EFA atte

S1·E6

Toga's Day Off

Nov 12, 2002 · 25 min

Eiji sneaks out of the castle during the staffs shopping day and takes Toga along with him for his first day out of the castle and his first day in the big city. As the maids searc

S1·E7

Drill Girl on the Beach

Nov 19, 2002 · 25 min

On the anniversary of her father Isanas death, Luna returns home to the island of Okiaowa but is surpirsed when she finds that the rest of of the Gran Knights have decided to accom

S1·E8

Storming the Castle

Nov 26, 2002 · 25 min

When the Zeravire attacks the the castle, all hope of stopping it lies with Eiji, who has accidentally found himself piloting the Gran Kaiser. To survive he must call upon all the

S1·E9

A Distant Embrace

Dec 3, 2002 · 25 min

Repairs begin on the castle following the attack by the Zeravire and Eiji begins to recover from his battle but runs from his physical and runs into Mizuki who gives him insight to

S1·E10

Crack

Dec 10, 2002 · 25 min

Following recent events, Sandman reluctantly has an auto-pilot device, The Gran Phantom intstalled into the Gran Kaiser in case of emergency. And one does arise when a Zeravire wit

S1·E11

The Thing That Was Lost

Dec 17, 2002 · 25 min

After seeing what darkness Toga is capable of in the heat of battle, Eiji quits the Gran Knights and leaves the castle to return to a normal life. Leele ventures to town to convinc

S1·E12

Because You're With Me

Dec 24, 2002 · 25 min

The battle wages on as Gravion fights against the attacking Zeravire with a failing auto-pilot and Eiji and Leele still missing. But after his friend Yumi is injured in the attack,

S1·E13

White Steel Fang

Dec 31, 2002 · 25 min

The Zeravire have been evolving, not in order to destroy humans, but to ensure the destruction of Gravion. When the new and improved Zeravire comes to Earth to challenge Gravion, S