Rules for Aliens

[Baldrick]

I want to use some aliens (grays) and was thinking about some rules for them.  I felt that their heat ray would be short range, but very potent and they would be hard to hit (higher defense), but once hit, they would collapse like a house of cards (low defense).  Some would also have more advance psychic abilities and that they could mind control "puny Earthlings".  Any other suggestions?

[Alfrik]

Heat rays used on any flammable object would of course set them to instant flaming condition besides. Hover disks for each Grey? Snooper bots to be advance scouts / exploding near located hostiles, thus double alerting the Greys to enemy presence?

Just some thoughts

[Baldrick]

Those are some good ideas - I especially like the snooper bots.