Its origin is unknown, but is assumed to be built by Fujimiya the same way Gamu Takayama built the Esplender. During the events of Zoruim's attack, Fujimiya discovered that Crisis had been manipulating him, and after losing hope in himself, gave the Blue Light to Ultraman Gaia, rendering the Agulator useless. After Agul V2 was unlocked, the Agulator’s powers were restored, while Gamu kept the original blue light.
After the fight against Zogu, the Blue Light was rendered useless and neither Fujimiya nor Gamu could transform, until the events of "Once Again Gaia" where their light was restored by the Rinar, a race of advanced deep sea beings.
Fujimiya stretches his right arm downwards and the Agulater opens. He then brings his arm up and the Agulater flips and transforms him into Agul via a bright stream of azure light. He may occasionally yell "AGUL!" during the transformation process. In Once Again Gaia, Fujimiya held the device directly on his hand and transform in a similar manner to Gamu with his Esplender.
|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 | New Generation Eye|
|Other Media Items||Zoffy Bracelet | Jack Bracelet | Gorian Belt | Zaji Sword | Drew Bracelet | Flare Coin | Alphone Pendant | Ars Ring | Mimicry System | Ultra Operation|