Anyone even slightly familiar with Solo Leveling probably remembers the arc with that terrifying stone statue of God. It looked creepy enough — until you realise it was created by something even more sinister. His name is the Architect, and he’s the one pulling all the dark strings behind the scenes.
The Architect, also known as Kandiaru, is the hidden boss of the Double Dungeon — and essentially the moderator of the entire System that grants power to the main character. At first, he appears as a six-winged angel statue (though the wings can become arms — so he ends up with eight), hooded, with glowing red eyes and a purple gem embedded in his forehead.
His smile? The stuff of a therapist’s worst nightmares. Later, Jin-Woo breaks his mask, revealing a face with pale bluish skin, light blue eyes, and dark blue sclera. The expression he wears? A mix of contempt, arrogance, and pure madness.

Kandiaru is nothing short of a maniac. Not only is he arrogant — he sees humans as pathetic and beneath him. He sees his System as a masterpiece and himself as nearly godlike. He truly can’t believe someone like Jin-Woo could ever defeat him.
His loyalty lies solely with the Monarchs, whom he worships. When he finds out one of them, Osborn, has betrayed them and sided with the Rulers, Kandiaru is absolutely consumed by rage and betrayal.

So no, the Architect isn’t just another villain. He’s the embodiment of the cold, inhuman logic Jin-Woo constantly battles in the dungeons — predatory, calculating, and terrifyingly brilliant.