Three Predators named Celtic, Chopper and Scar came to hunt the Queen, as Predators do every 100 years.
Celtic and Chopper were too busy fighting humans to notice Grid behind them. Grid impaled Chopper and killed him with a head bite. Celtic turned around, and charged at Grid. Grid jumped on them and they fought to the death. During the battle Celtic cut off the tip of Grid's tail and trapped him in a net, which tightened around him, giving him grid-like scars on his head and shoulders.
Eventually Grid was able to pin Celtic to the ground and kill him by biting into his skull.
Later he attacked Sebastian De Rosa and took him away to be impregnated with an Xenomorph embryo.
He then stalked Scar, who was going to take his weapon from Alexa Woods. Grid and his Xenomorph siblings were spotted by Scar, who started shooting at them. The Queen called for the Grid and the others, who came and freed her from the chains that bound her. He chased Alexa and Scar, but Scar blew up the pyramid they were in, killing Grid and his siblings, while Scar and Alexa got out.
- There is a skin for Grid in the Alien vs Predator videogame. But in this case, he is called Nethead. The skin can be unlocked when players reach rank 34.
- He, The Queen, the Predalien, and Specimen 6 are the only Xenomorphs to kill a Predator on screen.
- He is shown to be stronger than the other Xenomorphs in the film because he single-handedly killed two Predators.