The Multiversal Glitch known as the Unquenchable Spark is always a Fire Genasi, but while they have all had a recognizeable resemblence to one another the variants each differ in appearance and sometimes in physical stature with no two being physically identical. All known variants have had a first name starting with K and the familial surname of Hiroke, despite hailing from different settings and timelines and differing quite a bit in the details of their origin stories.
Additionally, most variants have some affinity to the Feywild and to Elemental Fire, though in differing degrees. A personality quirk common to all known variants is an irrepressible courage and a generally upbeat attitude coupled to occasional sudden fits of fiery anger.
The many variants of the Multiversal Glitch known as the Unquenchable Spark often bear some combination of the following signature magic items. All known variants have carried the Magic Flute of the Pyre and most have wielded the Staff of Wigandia and worn the Robes of Ashes.