Trying to find character sheet for CR40 Mauzzkyl Jaezred

[AvangionQ]

Does anyone have a character sheet for Mauzzkyl Jaezred? I'm just curious what a CR40 creature's stats would look like.
https://forgottenrealms.fandom.com/wiki/Mauzzkyl_Jaezred + https://www.youtube.com/watch?v=qfawzEshL9Y

[Biggus]

As far as I know, no character sheet has ever been released for him. There is a CR40 dragon called Inferno/Imvaernarhro in Power of Faerun, his stats were published on the WotC website but the archive has been closed (presumably it's there on the Wayback Machine somewhere but I can't find it).

EDIT: There's also the adult Prismatic Dragon and very old Force dragon which are both CR39:

https://www.d20srd.org/srd/epic/monsters/dragonEpic.htm