December 21 – Gluggagægir (Window-Peeper)
The tenth of the Yule Lads comes on the night before the 21st of December and departs for home on the third of January. He was known for being probably the creepiest one, he would peek inside people’s windows to see if there was anything to steal.
The next to arrive is Gáttaþefur (Doorway-Sniffer).
See more about all the Icelandic Yule Lads