The Great Savant, The Cruel Master, The Deep Lich
Intermediate Power of the Windswept Depths of Pandemonium
Symbol: A spiral of gray, black, and white
Home Plane: Pandemonium/Phlegethon/the Hidden Betrayal
Alignment: Chaotic Evil
Portfolio: Derro, Magic, Knowledge, Cruelty
Core Worshipers: Derro
Domains: Chaos, Domination* (CD), Dream* (CD), Evil, Madness* (CD), Magic, Trickery.
Favored Weapon: Dagger
Diirinka was thought to be the son between Moradin and Berronar Truesilver as well as the brother to Abbathor, Clangeddin Silverbeard, Sharindlar, Vergadain, Thard Harr, Gorm Gulthyn, Marthammor Duin, Dugmaren Brightmantle, Laduguer and Diinkarazan. He was Diinkarazan’s twin.
He was banished by his father alongside his twin brother, though it wasn’t clear for what.
It should be noted that Diirinka might not exist, as the truth behind the Derro’s origins was that they were a form of dwarves tortured into insanity by the illithids. Though interestingly, worship of entities called Diirinka and Diinkarazan existed in Old Shanatar.