This article is from the Alien Movies FAQ, by Darryll Hobsonand Eelko de Vos E.W.C.deVos@TWI.TUDelft.NL with numerous contributions by others.
YES:
- The alien in "ALIEN^3" seemed to act/look different than the aliens in
the previous movies. This alien could be a "worker" with the task of
protecting the queen until she has a chance to mature.
- The alien species has alot of similarities with insects, so, like a hive
of ants or termites, the aliens would have soldiers and workers.
NO:
- The aliens that were in the "hive" at the end of "ALIENS" would likely
be classified as "workers" however they stood upright and looked no
different than the rest of the aliens (which would be considered
"soldiers").
 
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