Invasion by who or what

[Dioltach]

A hyper-intelligent shade of blue!

 

[SteelDraco]

Whatever lives on the opposite side of mirrors. Weird, mercurial shapeshifters who covet our concrete reality. And if they can look like anyone who looks in a reflective surface... How long have they already been invading?

 

[Scott DeWar]

I know it was mentioned, but I like the fey idea, thoren in with Harry dresden's summer/winter courts.

There could be a battle that his suddenly erupted for some insult or another between the courts. Rather then dirty their own soil, they take their fight to our world.

either that or a Smurfs vs tribbls war and we are in the middle of the conflict.

 

[Argyle King]

laundry goblins...


They've used all of the socks they've stolen from me over the years to construct war machines and weapons.

 

[Smoss]

Amazon Women from the Moon, of course. Duh.

Smoss

 

[JoeGKushner]

Go with the movie Legion and make it Angels.

the big G has had enough and its time to end it and start again.

 

[Hand of Evil]

I think Lovecraft monsters or Martians. But Nazis from the Moon could work.

 

[wedgeski]

Fey, Angels, dream-creatures, time travellers, internal threat; something abstract like disease, or perhaps an ideological shift (a ZEITGEIST, if you will...)

Smooth Morrus, real smooth...

 

[NewJeffCT]

Fey, Angels, dream-creatures, time travellers, internal threat; something abstract like disease, or perhaps an ideological shift (a ZEITGEIST, if you will...)

I'm definitely interested in Zeitgeist...

However, for the OP, I would go with humans. Maybe put some twist on it - from the future with very advanced weaponry and/or something that temporarily can nullify/lessen superpowers.

 

[Piratecat]

In cases like this, I always think, "what are the players least likely to expect?"

I'd want to use monsters that seem simple and underpowered but which scale nicely. Goblins are a great example. They move up to redcaps/spriggans, and formorian giants, and still can be sneaky backstabbing terrors.