The Birth of Agul (アグル誕生 Aguru Tanjō) is the sixteenth episode of Ultraman Gaia.
His first meeting with Agul comes back to haunt Hiroya, and the origins in his opposing perspective to Gamu's becomes clear.
- Imit-Ultraman Agul
- Ultraman Gaia Volume 4 features episodes 13-16.
- This is the first episode where only Agul fought.