(Parallel universe - different primarchs). Primarch of the 1st Legion of the Lightning Bringers. He grew up on Madrigal, was the first of the Emperor's sons to be found and reunited with the creator. Icarion was and remained the closest to the Emperor. He has the weapon "Child of Thunder" (spear). Acquired during exile in his youth. It is imbued with psychoreactive crystals, and a talented psyker such as Ikarion can channel his power into lightning to strike any nearby enemy.