The name Nils is a boy's name of Norwegian origin. Nils and is often added to user-created lists like "Fire Emblem" Names and discussed in our forums with posts like "Initials - Twins".
From the experts:
Like Lars, Sven, Niels, and Nels, an unjustly neglected straightforward Scandinavian name. Surname Nilsson or the anglicized Nelson derives from Nils.