The TDD-1 Tuatha de Danaan is the world's most advanced submarine and is Mithril's flagship. It is classified as an Assault Landing Submarine and houses a variety of AS, aircraft and other small vehicles. In addition to its revolutionary hull design, the Danaan possesses a sophisticated Artificial Intelligance called Dana. In a sealed area of the ship called the Lady Chapel, a TAROS device is installed for Whispered use.

It was originally an abandoned Soviet submarine but was procured and rebuilt with Teletha Testarossa's knowledge.

Technology & Combat Characteristics


Known Crew

Known Aircraft & Arm Slaves aboard

Arm Slave


  • Tuatha de Danaan are actually a race of gods from Irish mythology. They were founded by the goddess Danu.


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