King Chai Barnstokkr (チャイ・バルンストック Chai Barunsutokku?) is the king of Gren and is also the descendant of Serafino and Queen Silvia. Chai assisted King Anthony when he arrived in Gren to find the Wood Millennium Gummy. He later agrees with King Mokka and King Biscotti that the Book of Prophecies should not be destroyed and discusses the possible risks, but King Pico and Queen Lassi prefered the Book destroyed. King Pico later helps King Anthony in Diablo's War using the power of Wood as a weapon.
Chai is a type of spiced tea of Indian origin.
Barnstokkr is a tree in Norse mythology.
Chai is loosely based on the character Chai from Magical Starsign.