Some characters have pervasive or extremely noticeable personality quirks, but somehow remain faithfully employed because they are just that good at what they do. Coworkers, superiors, and friends are willing to overlook certain informalities because of this (e.g., a hypothetical highly successful lawyer who happens to wear fuzzy pink bunny ears during all his cases) so long as they get the job done and cause a minimal amount of intentional problems. This is a cost/benefit ordeal: if they weren't so good at their job or their quirks were too obstructive an employer would consider them a necessary sacrifice for sanity.