"I am the Spirit of the Shadow Triforce known as Demisen, I threaten the land and wish to take it over!" - Demisen
The Shadow Triforce
Demisen is a very powerful being who was tranformed into the Shadow Triforce by Hylia and her daughters, the Great Goddesses. He was planning the recreate the Hylian world and claim it as his own to rule. After his defeat, Hylia used the Triforce to transform Demisen, as said earlier, into the Shadow Triforce. Demisen was mad at this and made his return. He created the dark monsters that lure the lands and he made some huge trouble throughout the lands.