His work is generally figural and characterized by large, statuesque figures enveloped in highly stylized drapery that suggest a volumetric body beneath.
Shading is accomplished with lightening with white and darkening with deeper tones of the same color.
The heads of the figures tend to be proportionally small, however the faces are rendered especially well.
Backgrounds are sparse or a flat gradient of usually a single color with the lighter shade above and the darker below.
Overall, the Master of the Registrum Gregorii's style is iconic and monumental and represents the pinnacle of Ottonian manuscript illumination.