Fulgrim, the Primarch of the Emperor’s Children, was known for his pursuit of perfection and dedication to art, culture, and martial excellence. Found on the planet Chemos, he saved his world from ruin and instilled a culture of striving for perfection. When united with his Legion, Fulgrim inspired his Space Marines to seek the flawless execution of their duties, becoming a symbol of beauty, charisma, and ambition.
However, Fulgrim’s quest for perfection became his downfall. During the Great Crusade, he was corrupted by a Chaos-tainted weapon, the Laeran Blade, which began to twist his mind. This corruption deepened as he fell under the influence of Slaanesh, the Chaos God of excess and decadence. Fulgrim’s obsession with perfection turned into a pursuit of hedonism, leading both him and his Legion down a path of moral decay and atrocity.
Fulgrim’s betrayal of the Emperor was fully realized during the Horus Heresy, where he became one of Horus’s most powerful and twisted allies. His most infamous act was the murder of his brother Primarch, Ferrus Manus, during the Drop Site Massacre on Isstvan V, marking his complete descent into the embrace of Chaos.
After the Heresy, Fulgrim was elevated to Daemon Prince of Slaanesh, achieving immortality but at the cost of his humanity. Now, he resides in the Realm of Chaos, ruling over a realm of excess and corruption. Fulgrim’s tragic story is a stark reminder of the dangers of unbridled ambition and the seductive lure of Chaos, making him one of the most infamous figures in Warhammer 40,000 lore.