|Home world:||Earth (Giants of Light Timeline)|
|First appearance:||Ultraman Dyna Episode 2: "A New Light: Part 2|
|Weight:||64 000 t|
Giralen (グラレーン Gurarēn) is the second kaiju created by Sphire.
Subtitle: Lava Synthetic Monster (溶岩合成獣 Yōgan gōsei-jū)
- Height: 58 m
- Weight: 64,000 t
- Origin: Near Super GUTS base
A Sphire came to Earth and fused with a lava pit and turned into Gralen. The kaiju made his way towards the Earth base of Super GUTS while most of the team was distracted by other Sphires. After Ultraman Dyna destroyed a portion of their squad, he came to Earth to fight Gralen as he was decimating the base's security forces. While Gralen's flames held off Dyna it didn't take long for the hero to go into Miracle Mode. Dyna was easily outspeeding Gralen and he held the lava kaiju in the air he used the monster's own flames to blow him to pieces using the Revolium Wave. After Gralen's destruction, the Sphires left the solar system.
- Fire Stream: Giralen can fire deadly streams of fire from its mouth
- Body Tempature: Giralen is able to increase his Body Tempature to burn enemies