The Valkyrie

The original Valkyrie was created by a curse cast upon Barbara Norris by the Enchantress. She turned out to be the original Brunhilde, leader of the Valkyrior. She left Earth to be in Asgard and lead her Valkyrior. Recent, with help of Pluto, the Ice Queen (also known as Lorelei and Enchantress' sister) cast the Valkyrie spell on someone else, who it is at this time is unknown. She was given the unbreakable Dragonfang from Brunhilde, as well as the flying steed named Aragorn which also was once ridden by the original Valkyrie. This new Valkyrie joined the Defenders in vol 2 #4.

Valkyrie posseses superstrength. She is also an excellent hand-to-hand combatant. She posseses Dragonfang, an unbreakable sword made by a dragon's tooth, it has a spell cast on it so when it's holstered Valkyrie can will "normal" clothes to appear and when it is unsheathed, she can will he costume back.