With nearly all of the shumondrin's actual data missing, the few details that remain paint a vivid image of a stranger that is sinister and lethal, and simultaneously, delicate and ephemeral. Both too large and fragile to fit into all but the most gaping of building interiors, the shumondrin nonetheless hunted sensitives with vigorous "delight". Within its well-oiled factory-shadow territories, it hid itself from view until within a breath's distance of the sensitive. At this point, the shumondrin made its sole attempt at an attack.
Readings of the strain's simulated metadata data show that these attacks were not likely to be successful, with only 0.02% resulting in the stranger's "sneaky kiss" taking hold upon the unsuspecting sensitive.
This lack of information has not stopped the shumondrin from appearing in a range of visceral media (some bordering on the obscene), however, which paint it in a wide range of depictions – from the elemental and ghost-like, to the highly (and some would say, repulsively) anthropomorphic. These otherwise fictional depictions do share one conclusive detail from remaining notes, however – there was only a brief window after the stranger's slit-like eyes opened up, and before the shumondrin's tissue paper skin breaks apart. It is during this time that the stranger was considered at its structural apex, with the influence of its shed even shaking such noted sensitives as Alex Muto and Jealous Fontaine.