- ―Henshin Call
After the Rings sense danger, they flicker causing Seiji and Yuko jump into the air, and spin around until their rings hit each other, and then combine into Ace. Later, after Yuuko leaves to go to the moon, Seiji wears both rings, and hits them together to transform.
Ocansionally Seiji and Yuko will yell Ultra Touch! (ウルトラタッチ！ Urutoratatchi!).
- The Ultra Rings are the first transformation items used by more than one person.
- In fact, Ace doesn't have to use two humans to be his host, because to transform to his true form, he only needs the two Ultra Rings to touch each other. So, his host only need to wear two Rings in two fingers then let them touch each other.
|Showa Items||Beta Capsule | Ultra Eye | Willpower | Ultra Rings | Ultra Badge | Leo Ring | Beam Flasher | Bright Stick | Bright Bracelet|
|Heisei Items||Delta-Plasma | Willpower | Beta Capsule/Flash Prism | Estraller | Pikari Brusher | Spark Lens | Reflasher | Esplender | Agulater | Nice Dreamer | Cosmo Pluck | Just Lancer | Evoltruster | Darkevolver | Max Spark | Mebius Brace | Knight Brace | Ultra Zero Eye | Saga Brace | Ginga Spark | Dark Spark | Dark Dummy Spark | Gunpad | Ginga Light Spark | Livepad | Victory Lancer | Chibu Spark | Ultra Fusion Brace | X Devizer | Orb Ring | Orbcalibur | Riser | Ultra Zero Eye NEO | Giga Finalizer | Gyro | Orb Ring NEO|
|Reiwa Items||Taiga Spark | Tregear Eye | Taiga Tri Blade | New Generation Eye | Ultra Z Riser|
|Other Media Items||Zoffy Bracelet | Jack Bracelet | Gorian Belt | Zaji Sword | Drew Bracelet | Flare Coin | Alphone Pendant | Ars Ring | Mimicry System | Ultra Operation|