What do we know about Riddler from Paradox Quest?

Question

During Paradox Tower Quest we can find books created by Riddler. He wrote that he will become God one day and people will bow to him.

But it seems that he had died and now he is a ghost NPC at the top of tower.

What else do we know about him?

Answer 1

Riddler was the apprentice of Goshnar, the necromancer king. After the war between the Brotherhood of Bones and the Nightmare Knights ended, he abandoned his teachings and tried to cheat death. His failure turned him into a soul that wanders around Paradox Tower. (Riddler may have been the man, Porgol, who was an apprentice to Arcian whom he betrayed. He sought to become a great necromancer and killed his master in trying to gain power.)

 He built the Paradox Tower that includes a library and a challenge on most floors to get to the next one.
 

Sources: 

• https://www.tibiawiki.com.br/wiki/Riddler 
•  https://tibia.fandom.com/wiki/Riddler