Would a hard light hologram be a possibility in the future? Why or why not? - Quora
ArtStation - Ghost Hardlight FX Exploration
How Hardlight Works (Halo Lore) - YouTube
Hard light - Halopedia, the Halo wiki
CJ Black on Twitter: "Whenever we see Ark-Zero & Azu interacting or doing anything within the same timeframe as each other, it would essentially be Ark focusing half of its overall functionality