Martians

My plan is to use these sort of like the Incredible Man from the Fantastic Four comic book series.

A race of highly advanced shape shifting creatures that were not evil but who found humans amusing.

So they won't be the enemy as such.

But won't be much of an ally either.

I think their smiling faces lend itself to that sort of being.

There size with 54mm figures makes them large enough to be noticeable but not big enough to be threatening.

But when placed with 1/72nd scale figures they become very large and rather scary!