Fortnite's Infiltrator challenge is a key part of Week 8 Season 7 quests, delivering valuable XP. The task, "Conversing with characters to identify an infiltrator," requires keen observation. As seasoned Fortnite experts, we've pinpointed every location, shared proven identification tips, and outlined steps to success.

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This quest is among the simpler ones this week: simply interact with NPCs scattered across the map. The main hurdle is tracking them down—we've mapped them all. Note that identifying the infiltrator is randomized each match.

Dr. Slone recruits Loopers to root out infiltrators sabotaging the IO. Successfully eliminate them to claim 30,000 XP.
Key NPC locations include:

Approach each NPC, engage in conversation to probe for infiltrators, and eliminate confirmed ones—you'll need five total. In v17.10, impostors may impersonate humans. Ask their favorite food; a reply like "Kit's Tuna-flavored kitten food!!}" reveals them (earning 80 XP each, as noted by iFireMonkey).
While any NPC can be an infiltrator, Human Bill, Dreamflower, Maven, Rook, and Sunny appear more frequently in this role. Finish the quest for 30,000 XP.