The greater Unity’s current design took no inspiration from any modern religions, why do you ask? 😂
While that’s not actually a halo, the projector floating above the Unity bared enough resemblance to one that it influenced the choice to put them in clergy robes.
The Unity is overwhelmed an innate desire to be good and become a better sentinel, so the angelic appearance seemed even more fitting.
The comic is all about repercussions from moral disagreements between the Unity and another sentinel:












