King Daku is one of the Seven Enterran Generals and the king of all insect Enterrans. He resembles a Hercules-beetle knight.

Daku is also the weakest of the seven generals. He managed to trap Yakumo in his palace through the help of Kiri. He also managed to capture Mushra, Sago and Kutal, and he was planning to implant bugs in them, to make them his servants. Daku is later defeated by Mushra and his friends, but not before he turns himself into a metal liquid like creature that can blend into his surroundings. He is then defeated by Hyper Mushra, Hyper Sago and Hyper Kutal, and turned into a card.