Dante, born Luis Dante, sometimes called the "Lord of Angels" and "Bringer of Sanguinius' Light," is the current commander and Chapter Master of the Blood Angels Chapter of Space Marines as well as the lord regent of the Imperium Nihilus, and has served as Chapter Master for approximately 1,100 standard years.

Commander Dante's power armour incorporates a highly ornate golden death mask beneath his Iron Halo, called the Death Mask of Sanguinius, which is said to have been worn by and shaped to match the fear-inspiring features of Sanguinius, the Blood Angels' primarch, at the moment of his death at the hands of the Arch-traitor Horus.

He is believed to be the oldest living LoyalistSpace Marine as he is currently over 1,500 standard years old, with the exception of those Space Marines sustained by the cybernetictechnology of Dreadnoughts, the use of temporal stasis or other technological means of extending Human life. Commander Dante is approximately 1,552 Terran years old as of ca. 999.M41, as records indicate he was born in 447.M40.

In the wake of the victory of the Blood Angels Chapter and their successors in the Tyranid Hive Fleet Leviathan's assault upon their homeworld of Baal, the Primarch Roboute Guilliman, the lord commander of the Imperium and Imperial Regent, declared Dante to be the lord regent of the Imperium Nihilus. This made Dante the effective ruler of the half of the Imperium cut off from Terra on the other side of the Great Rift.

Following the Devastation of Baal in the Era Indomitus, Dante chose to undergo the agonising surgery required to cross the Rubicon Primaris and become a Primaris Space Marine. His armour and wargear were then modified as required to fit his increased stature, muscle mass and physical strength.