C.Kunin:The Disa in the story provided by Dieter Zimmer is the same as the legendary Disa that I found, but it was Dis as another name for Hades* that I was actually looking for but did not find. Hades is an anagram for Shade - or vice versa (see versipel) I suppose. [Dieter Zimmer: 'Pluto's other names are Hades and Dis.' ]

Jansy Mello: Shade/Hades is an anagram, but was it intended by VN, in the sense that the name Shade would’ve been chosen because of this wordplay instead of its other shades of darkness?  

You mention Disa as a figure of  the underworld and, although you didn’t mention it this time, you once brought up your theories about how Disa relates to Sybil Shade. How would you connect both names, Shade/Hades and Disa, or their allusions?