I can only speak for my own understanding, but character typically refers to a lens’ unique signature (whether good or bad depending on the viewer) based on the sum effect of how it renders a variety of visual elements, including bokeh, contrast, color, distortion, micro-contrast, resolution, flare, and sharpness.
It often refers to a lens that is not clinical and exacting in its image quality, while others might contend that “character” is a pretentious way to glorify a crappy lens. However, the 50 1.2L, for example, is not, from what I know, a crappy lens, and the value of ‘character’ remains subjective.
Two points:
(no sharpness talk here). The list of what constitutes 'character' contains 4 items that refer to and affect the 'sharpness' you don't want to talk about.
Of the items in the highlighted list, only one is NOT adjustable in post.
Conclusion:
bokeh is the only parameter of 'character' that is lens-dependent
Commentary:
I've been buying SLR lenses for just over 40 years. Not once have I shopped lenses based on how they render stuff I'm not focusing on. Seems a bit like buy a car using windshield bug-splatter patterns as your only criterion.



