The Daimyo first appeared to recover his son, the Ultimate Ninja, after the Ninja engaged Leonardo in a duel to the death. Following this, theTurtles met him upon their first visit to the Battle Nexus. His history with Master Splinter was briefly talked about, as he saved Miyamoto Usagiand Splinter from an attack by Drako. The Daimyo was excited that Splinter's sons had joined the Battle Nexus Championship, and he decreed that they be allowed to enter despite being improperly registered. However, this led to Drako seeking revenge and possession of the War Staff. The Daimyo, summoned by his son, was wounded by Drako's assassins. After being saved from a second attack by Usagi and Donatello, the Daimyo was forced to watch as his son and Drako were pulled into a warp caused by Drako's use of the War Staff. He closed it, and was left to grieve, after crowning Michelangelo as Battle Nexus Champion.
The Daimyo visited the Turtle Lair for a Christmas get together, along with Usagi and Gennosuke.
Some time later, when Leonardo came to the Nexus seeking his time-scattered family, he found the Daimyo weak and not thinking clearly.Ultimate Drako, the fusion of Drako and the Ultimate Ninja, had weakened him and were planning to destroy him. However, the Ninja could not hurt his father, and the Daimyo's son was returned to him as a young boy.
The Daimyo later judged Michelangelo's rematch with Kluh. He sensed the interference of the Levram wizard who removed the Battle Nexus anti-fatality spells, but could not intervene due to the Levrams taking his son hostage. After the Ultimate Ninja was rescued, the Daimyo took the Levrams prisoner.
Later on, at the end of Back to the Sewer, he watched April and Casey's wedding with his son from the throne room.
- ↑ "The Ultimate Ninja"
- ↑ "The Big Brawl, Part 1"
- ↑ "The Big Brawl, Part 3"
- ↑ "The Big Brawl, Part 4"
- ↑ "The Christmas Aliens"
- ↑ "The Real World, Part 2"
- ↑ "Grudge Match"
- ↑ "Wedding Bells and Bytes"