This information comes from the Japanese website, and is a rough translation of the text. There may be some minor changes in names/details.
A disaster occurred and the Kingdom of Hyrule was destroyed... 100 years later the hero Link awakens from a long slumber in underground ruins, led by a mysterious voice he steps into the world.
A young man who wakes up without any memories. Guided by a mysterious voice, he is cast into a journey across the vast Hyrule.
Princess of the Hyrule Kingdom. A complex girl who is wise, curious and gentle. Researches the ancient ruins scattered around the world.
A Goron who lives in Hyrule. One of the fiercest warriors among the Goron tribes, he is always calm. Once he enters battle he has a brave and brutal side, shouting powerfully as he knocks down enemies.
Lito who lives in Hyrule. He is wrapped in the same blue cloth as Daruk and Mipha...
Zora who lives in Hyrule. Has an introvert personality and doesn't speak much. She has special powers not found in other Zora.
Relics that people are said to have created a long time ago. A major disaster caused them to suddenly attack people and 100 years later they still continue.
A type of demon living in Hyrule. They make living by making hides with multiple animals. It is pretty as a bee begins. Find them on the move and they will attack.