Take the halflings from Warhammer, the city and land around it becomes the "Moot", the halflings a green mafia. They control food production and prices. They build canal to move the goods.
Someone has been watching Stargate: AtlantisI often considered that since Plato got his description of Atlantis second-hand (he never witnessed Atlantis, himself), what if Atlantis was an orbiting space station, and he just misunderstood the original explanation of it, since he had no context to understanding to know it correctly, and it generally looks like the photo in this post (above) this is a reply to, but a spinning torus in space, instead. And the sinking of Atlantis, is rather it falling out of orbit and crashing into the sea (I came up with this idea before Stargate Atlantis, so no infuence there...) Every time I see a rendering of Atlantis - I think 'space station'...
You could have some Innsmouth-type interaction here where the aquatic/'fishmen' grab people, or even better find ways to seduce and indoctrinate minions, leading to their followers developing an 'Innsmouth' look of their ownWhich aquatic groups are included makes a big difference. If they can't walk on land, that gives them a tremendous power in the water but allows PCs to run away from them, and it means the water-dwellers have to have specific land-walking agents.
Who? This guy? I had some assets I wanted to play with, but had no use for - even calling this 'weekend at Innsmouth and all I got was this weird rash...'You could have some Innsmouth-type interaction here where the aquatic/'fishmen' grab people, or even better find ways to seduce and indoctrinate minions, leading to their followers developing an 'Innsmouth' look of their own