!!Lobster Johnson (and possibly Edward Grey) are thematic analogues to the B.P.R.D.

Mike Mignola has said before that if there had been a B.P.R.D. at the time, Lobster Johnson most certainly would have been a part of it. It is not a stretch, then, to say that Lobster Johnson was the B.P.R.D. of his time (albeit in a more OneManArmy way). The implication is this: defending against paranormal threats is a required duty, whether in a cosmic/fate sense, or for more practical reasons.

Lobster Johnson's thematic value then [[note]]aside from giving Mignola an excuse to write {{Pulp}} stories[[/note]] is to provide an analogue to the B.P.R.D. And just as the B.P.R.D. seemingly has a higher calling sometimes in the performance of their duties, so too does Lobster Johnson have a higher calling in death to the greater goal of Justice (not to get in to EpilepticTrees, but this may explain his near-corporeal ghost form).

Thus, by including this character, we can see that paranormal activity, and defense against it, have always been necessary to the well-being of humanity. And we can also see that the need for it has escalated, when comparing the size of the B.P.R.D. as an organization to the RagtagBunchOfMisfits that the Lobster employed.

Edward Grey (of the new ''Witchfinder'' sub-series) serves a similar thematic purpose.