- ―Gen's henshin call
The origins of the Leo Ring are unknown but it is known that it was with Gen/Leo when he first arrived on Earth. Since then he has used it whenever he needed to transform into his true form.In the last episode, Gen removed Leo Ring when he broke up with the Miyamas, but he didn't let go, but when he appeared in episode 34 of Ultraman Mebius, it was putting on his left ring finger again.
Gen waves his hands and performs a punching motion with his ring fist, holding the arm with his free arm. He then shouts 'Leo' and a bright light is emitted from the eyes from the lion image on the ring transforming him. Sometimes, Gen can also transform by placing his hands in the air similar to Hideki Go and shouts "Leo" before transforming. Other times Gen has transformed without saying a word but the word "Leo" could still be heard, implying he was saying it in his mind or it was there to be cinematic.
- The Leo Ring is the first transformation item after the Beta Capsule not to use the word "Ultra" in its name.
- It is also the first to use its owner's name.
- This transformation item name is also known as The Lion's Eyes (獅子の瞳 Shishi no Hitomi).
|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 | Estrellar | Pikari Brusher | Spark Lens | Lieflasher | 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 | Chibull 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 | 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|