D&D Monsters: Oozes

We reach the final post in this series with the monsters that are, anatomically speaking, the simplest of them all. The idea of monstrous slime is essentially a modern one; some antecedents may exist here and there, but generally, we're thinking of the likes of the 1958 film The Blob or Clark Ashton Smith's formless spawn of Tsathoggua, which made their debut in 1931. 

The 1E Monster Manual includes a number of creatures that could loosely be described as oozes but only four of these have consistently appeared in the core rulebooks (excluding 4E, as I usually do, which retains just two of them in the MM1). Three of these are entirely amorphous, although the one that's perhaps the most notorious does at least have a shape.

DW Monsters: Sea Devils

Next up in season 9, we’re back to present-day Earth and The Sea Devils. The eponymous race are introduced as a variant form of the Silurians adapted to underwater life and, beyond the aquatic theme, provide a similar role in the TV show – although they do appear to be more inherently violent, presumably due to a warrior upbringing. They return much later in the classic run alongside the Silurians in Warriors of the Deep but were not seen again on screen until almost the end of the Thirteenth Doctor’s run. 

Outside of the TV series, they have proved less popular than their Silurian kin, appearing alongside the latter in the 1993 novel Blood Heat, but rarely featuring on their own outside of a few comics and short stories. They have appeared in just a couple of the audios, neither of which feature the Doctor and one of which is part of a larger Silurian plot arc. A mention in a novel that doesn’t feature them directly implies that they are the same as the Deep Ones created by H.P. Lovecraft - although beyond living underwater and being cold-blooded, there doesn’t seem to be much resemblance between the two.