Total Annihilation! The Five Ultra Brothers (全滅! ウルトラ五兄弟 Zenmetsū Urutora Go Kyoudai) is the twenty-seventh episode of Ultraman Ace. It is the first part of a two-part arc which features the previous four Ultra Brothers a third time.
An extraordinary large alien, Hipporit, appears on Earth, wreaking havoc and demanding that humanity hand over Ultraman Ace. TAC sends aircraft, but their attacks are ineffective. Seiji and Yuko decide to fly into the alien and transform, but their Ultra Rings don't activate, and a voice warns them not to become Ultraman Ace.
- Ultraman Ace Volume 7 features episodes 25-28.