At the start Shade is super ultra serious (mostly to appear threatening and to compensate for her lack of height( and Spark more goofy and lighthearted and generally more emotional. As the story progresses the roles start to switch, Spark growing more serious as Excalibur beats into him and Shade becomes more silly and generally confident, ending with both being more "mature" and having fun

Nora in Shattered Divinity is dressed in classic reaper clothes (blue robes, some rope and shadows for days) same in Three Force War. In Golden Age however he tries to be less threating an instead disses the robes for a modern jumper (still blue tho) still deciding if he should get his flesh back or still with bone because that's sill