|Homeworld||Scala ad Caelum|
|Game||Kingdom Hearts Union χ|
Sigurd is an inhabitant of Scala ad Caelum who appears in Kingdom Hearts Union χ.
Kingdom Hearts Union χ [Cross]
When Brain arrives from the past into Scala ad Caelum, Sigurd goes to meet him and gives back his hat. After reporting back to an unspecified authority, Sigurd asks Brain to come to his headquarters. He explains it was set in stone that Brain would escape the destruction of Daybreak Town and arrive at Scala ad Caelum on that day, where Sigurd's group would be to meet him, and that Brain is the only one of the Daybreak Town survivors to arrive in the current era. As Sigurd escorts Brain to his headquarters, they pass a fountain plaza with a statue of Ephemer, who Sigurd explains to be the Keyblade Master who founded Scala ad Caelum.
Sigurd wears a dark green shirt, brown pants, a brown belt, black gloves, and brown boots. He also wears a black, purple, green, and orange hooded coat and a purple capelet. Sigurd hides his face under his hood and wears a black, orange, and purple hat on top of it.
In Norse mythology, Sigurd is a hero who killed a dragon.