A duo of First Order stormtroopers, while on patrol in Kijimi City during 35 ABY, communicated about the T-18. One inquired whether the T-18s had been activated, and the other confirmed their activation and ongoing perimeter reconnaissance.
The inclusion of the T-18 reference originated from voice actor Sam Witwer, serving as an allusion to a dialogue exchange in Star Wars: Episode IV A New Hope. This exchange featured two stormtroopers discussing the BT-16 as Obi-Wan Kenobi deactivated the tractor beam. Witwer also incorporated analogous lines into Rogue One: A Star Wars Story and Solo: A Star Wars Story, referencing the T-15, as well as Star Wars: Episode VII The Force Awakens and Star Wars: Episode VIII The Last Jedi, mentioning the T-17. A parallel nod to the T-16 was inserted into "Part III" of the show Obi-Wan Kenobi. The reference was contingent on the specific time period.