Aside from being cute, and maybe harking back to why’s guide; I like how this feels like it aids in understanding. Each illustration provides character that helps aid in memorizing or creating a mental landscape of the exceptions.

Theres probably a lot of documentation that could be aided by illustrations like this along the lines of analogy and metaphor. Aside from making the process of reading documentation more fun, it probably helps differentiate long and complex documentation that otherwise might blur together.