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:
- Some people have witnessed skin hanging down (some say it's his ear). This
would indicate that he's an android. To further the issue, Bishop II takes
a nasty hit in the side of the head, yet remains concious, it is unlikely
that a human being would be able to shake off such an injury. The red blood
was just a way to ensure Ripley he was a human. His blood was just coloured.
It was the only way to ensure for Ripley he was a human.
- The credits indicate that the character is named "Bishop II" as if to say it
is just another copy of the same line of androids.
NO:
- "85" hit him in the side of the head and he started bleeding red blood
(around his left ear). Since the androids depicted in the trilogy have
white blood, this Bishop is probably human. (it is too speculative to
theorize that the company has made a red-blooded android since "ALIENS")
- Alan Dean Foster's novelisation of the movie suggests that he definitely
is human and he bleeds badly when hit).
 
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