Quantum Caelum (Far Sky)
The Far Sky is one of the newer titans of Legio Atarus, having been built on Atar-Median just a century before the Horus Heresy began. Princeps Janis Garvin has helmed the Reaver Titan since its addition to the legio. However during the campaign against the orks in the Segmentum Obscurus the Far Sky's machine spirit began to show increasingly aggressive tendencies. The reaver would push Princeps Garvin to close to dangerously short range to finish off damaged ork fortress vehicles and relished in crushing enemies underfoot.
Once news of the Warmasters betrayal reached Maniple Laeto Ferro and the titans were stowed on the mighty mechanicum ships for transport to the warzone, the machine spirit of the Far Sky quieted. However, Princeps Garvin can still fell the built up rage while interfacing with the titan on the journey. Princeps Garvin feels as though the Far Sky is merely waiting for it's chance to face off with traitor titans, and on that day she hopes she can control the machines will.