Though Grid is mostly shown to rely on primal instincts like its siblings, Grid seems to show some unique intellectual traits found in some individual Xenomorphs. When Scar and Lex try to escape the pyramid, Grid chased them in the ice tunnel, but is too slow and is incinerated, crushed and buried by the self-destruct device explosion. When the Queen screeched for them to retreat, Grid and the other Xenomorphs returned to the Queen and released her by attacking her, allowing her acid blood to burn through the chains that confined her. As Scar began blasting alien after alien, Grid hid in the shadows to avoid the plasma blasts.

Grid and several other Xenomorphs catch up to Scar just as he gets his plasma caster back from Alexa Woods.

It then begins to stalk the remaining Predator, Scar. Celtic manages to trap Grid in his net but due to Grid's acid blood, it escapes and jumps on Celtic and kills him with a bite to the head. A long engagement of single combat ensues between Grid and the plasma caster-less Celtic during the battle the alien is caught in a net, which slowly tightens around its victim, shot by Celtic (hence its name), with Celtic appearing to have the slight advantage. After easily ambushing and impaling a distracted Chopper, Grid gains the attention of Celtic, who becomes enraged, seeing his brother killed by the Xenomorph.

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