Ok since you have different models maybe go down the aliens Bishops route.
Hyperdyne Systems was a corporation manufacturing Synthetics that pioneered the development of Synthetic technology in the 22nd century. Their products included the 341-B model (Bishop) of androids (designed by Michael Weyland) and 120-A/2, one of which, named Ash, was placed aboard the USCSS Nostromo in 2122 as a Synthetic sleeper agent.
Geeky I know but gives you choices
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