So Frankenstein's monster and Hellboy go at it in 'House of the Living Dead'... only to be followed up by 'Frankenstein Underground'... where secrets of the mystical world (universe) are revealed!

These secrets can similarly be found in the pages of Hellboy and/or to the members of the Heliopic Brotherhood of Ra!

I would share them here but anyone can get them for $19.99 with the purchase of 'Frankenstein Underground'.

I also don't think the secrets are very secret as the Hellboy wiki on Fandom does a superb job at exposing them; https://hellboy.fandom.com/wiki/Hellboy_Wiki.

I'm glad I found Hellboy, lots of fun reading!
Robert