A Xenomorph Skull Sits in the Predator Trophy Case
What's There
In the Predator ship's trophy case, among the mounted skulls, sits the unmistakable elongated cranium of a Xenomorph. Director Stephen Hopkins has said it was his idea, made practical by Stan Winston's involvement and by the fact that one studio held both properties.
Why It Matters
This is the rare Easter egg that did not refer to a shared universe so much as create one. In 1990 there was no Alien/Predator crossover to nod at. The skull was a joke available only because of a rights coincidence — two franchises sitting in the same corporate drawer — and it implied a connection that no film had yet asserted.
Fourteen years later, Alien vs. Predator was released. The prop had done what a Marvel post-credits scene does deliberately, except nobody involved was making a promise. A background gag mounted on a wall functioned as a pitch, and the industry eventually took it.
That reverses the usual relationship between reference and continuity. Normally continuity comes first and the reference points back at it. Here the reference came first and the continuity was built to catch up. It is worth holding onto as a caution against reading every crossover detail as planning: sometimes the detail is just a gag, and the plan is retrofitted onto it years later by people who liked the gag.
The candour of the source matters as well. Hopkins does not claim foresight — his account is essentially that it was funny and legally possible. That is a more honest origin story than most franchise mythology allows, and it is the reason this entry sits at confirmed rather than likely.
Related entry: alien-vs-predator-lance-henriksen-bishop-link — the crossover this skull eventually produced.
Source: director Stephen Hopkins said the Alien skull was his idea because Stan Winston was returning and Fox owned both properties, preserved in this interview transcript.
