Kenji Kusanagi, a high school student, becomes Kotetsushin Jeeg to fight the sudden reappearance of Haniwa Genjin from the Jamada Empire ruled by Queen Himika.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Build Up, Koutetsu Jeeg! | 2007-04-05 | 25 min |
| Season 1 | Episode 2 | Queen Himika Reborn! Revival of the Jama Empire | 2007-04-12 | 25 min |
| Season 1 | Episode 3 | Tame the Crazy Horse! Explosion! Hell Slap! | 2007-04-19 | 25 min |
| Season 1 | Episode 4 | Underwater Battle! Giga Shooter is Ready! | 2007-04-26 | 25 min |
| Season 1 | Episode 5 | In a Trance?! The Dreadful Trap of the Jama Empire! | 2007-05-10 | 25 min |
| Season 1 | Episode 6 | Mystery! Daikoku-sama Build Up Too! | 2007-05-17 | 25 min |
| Season 1 | Episode 7 | Raid of Takachiho's Peak! I Saw him in the Land of the Mist! | 2007-05-24 | 25 min |
| Season 1 | Episode 8 | Aim at Jeeg with the Power of Love! Exchange Complete! Altitude 10,000 Meters! | 2007-05-31 | 25 min |
| Season 1 | Episode 9 | Heartless Scheme! The Plan to Annihilate Build Base! | 2007-06-14 | 25 min |
| Season 1 | Episode 10 | Captured Tsubaki! Himika's Evil Ritual! | 2007-06-21 | 25 min |
| Season 1 | Episode 11 | Glare at the /moon! Cleave Evil with your Undaunted Spirit! | 2007-06-28 | 25 min |
| Season 1 | Episode 12 | Last Battle! Rise of the Great Bronze Bell! | 2007-07-05 | 25 min |
| Season 1 | Episode 13 | Become the Steel God!! | 2007-07-12 | 25 min |
