Gilgamesh's Hyper Helmet is featured in the character creation mode of Soul Calibur III. In addition, the Excalibur along with the Blue Line Shield is one of the weapon sets available to Sword & Shield users.
In Soul Calibur III, parts of Valkyrie's equipment and items (namely the winged helmet, armor and dress) are available for Create-a-Soul where she can be "recreated".