Úlfhéðnar
Úlfhéðnar (singular Úlfheðinn) are distinct from, and well beyond, Berserkir. They are the ultimate Norse warriors by blood. As such, Úlfhéðnar are born, rather than made, and always males. Úlfhéðnar are metaphorically and physically associated with wolf pelts (in contrast to regular Berserkir who are associated with bear pelts), as they are known to be inhabited by the spirit of wolves and to be hamrammir (shape shifters). Naturally, Úlfhéðnar see wolves as sacred and do not hunt them, being instead gifted their pelt upon the animal’s death.
There are three subspecies of Úlfhéðnar: Blendingar (half Jǫtunn and half men), regular Úlfhéðnar, and Menningúlfar (also referred to as Menningúlfhéðnar).
Úlfhéðnar are capable of performing feats far beyond the abilities of other warriors. Especially Blendingar who are genetically distinct with exceptional characteristics, leading to such Blendingar being known throughout history for rarely wearing a helmet or a mailcoat, and for killing many enemies with just one blow, while being immune to fire, iron as well as many other things. Úlfhéðnar are also known for having reached exceptional levels of spirituality, self-control, and cohesion, especially between Blendingar and Menningúlfhéðnar.
Skjǫldrinn (The Shield)
Úlfhéðnar entered a treaty in 748 CE, known as the Skjǫldrinn Covenant of 748, unifying all three subspecies of Úlfhéðnar, consequently also formally forming an alliance with Jǫtnar, and bringing all Berserkir serving with Úlfhéðnar under the protection of the order.