There's also a two pack in the set, but it's not what you'd expect. If you were making an action figure line based on aliens, wouldn't you think the set would be made up of aliens, astronauts, and maybe some government agents? Yeah, me too, but I guess they ran out of ideas after coming up with the stereotypical alien figure and decided to make a ninja two pack!
Maybe they're the government agents that take out the UFO abductees that know too much. Or better yet, maybe they're alien ninjas!
This figure sculpt has been used in other cheap figure sets. I've seen (non-alien) ninja sets at Dollar Tree that have these guys in transparent and non-transparent plastic. There's also "Super Wrestling" figures at dollar stores plus an additional wrestling set (that I forgot the name of) at Toys R Us, both of which had a different color scheme that made them more wrestler-looking and less ninja. The sculpt's probably been in other sets, too, and has yet to retire from the toy industry.
Just like with Kenner and Hasbro, there's variations for you to collect. The armed alien also came in classic green instead of tan. The ninja two pack came with a gray ninja instead of a white one. All of the cards have the same back, though, which is blank for the most part. The only things are a barcode and these numbers/words:
GREENBRIER INTERNATIONAL, INC.,
CHESAPEAKE, VA 23320
MADE IN CHINA