Futuristic enemies in a Medieval campaign

[Bathman]

Hello all.

I've started up a campaign with my group and this world is a purely "Medieval" type (i.e. very basic technology). This world is a limited map, but I plan on opening it up later on as the campaign grows, but I want this setting to be a part of a post-apocalyptic world (our Earth).

I have recently exposed a piece of ancient history that is sticking up out of the desert (remember the Library in Avatar, the Last Airbender?). This structure is a skyscraper that is left over from the world before. So, my question is this. Is there any type of monster/construct that would belong in a more futuristic setting, but would last years and years that my PC's would be able to fight?

I've looked at some constructs, but nothing really stood out to me as "non-magical" or "futuristic".

[chaoseffect]

Maybe consider having the building filled with a deranged cult of Androids. Perhaps once they were not sentient, but over time they have become so and they worship the technology there that "birthed" them.

[blackbloodtroll]

Technology Guide.

Pretty much all the futuristic stuff you can want is in material discussing Numeria.

It's the sight of an alien spaceship that crashed a millennia ago.

Robots, Androids, you name it.

[DM_aka_Dudemeister]

Robots are perfect for this.

[blackbloodtroll]

Inner Sea Bestiary has Robots.

You can just look them up on d20pfsrd, as linked above.

[Bathman]

Thanks guys! These are perfect and I didn't even realize that Robots and Androids had been stated out.

[Goth Guru]

97. Metallic Swarm
This mass of ant sized metal golems looks like a blob of glitter. What fits in a 5 foot square has 2D10 and has 10 hits. It has a speed of 20/climb 20 halved by electrical damage. Fire damage heals them up to 20(Dice max). As sort of Iron golems, they can only be harmed by things that don't allow spell resistance. They do 1D6 to objects ignoring hardness a round. They use this material to repair the dungeon. Usually encountered in 2D6 swarms.
Note: The card will only have on it, "Mosterous Encounters, 97. Metallic Swarm" and maybe an illustration. The rest will be in the rules booklet.

This is from The Cleaves. I will link the topic later.