NES Zapper Posse
When activated, a flock of six 8-bit ducks from the original Duck Hunt fly towards the background (in a similar fashion to Captain Falcon's Blue Falcon), trapping opponents in their way in the middle of a gun duel between the Wild Gunmen and the thugs from Hogan's Alley. After the 8-bit dog from Duck Hunt appears and laughs, the Wild Gunmen will repeatedly shoot at the thugs and cans, launching the trapped opponents.
NES Zapper Posse deals a total of 45% and KOs opponents at around 60%. Knockback-wise, it is the weakest trapping final smash in Ultimate that doesn't have the ability to Instant KO and its activation hitbox is fairly standard for cinematic final smashes, making it an ineffective final smash overall.
In this Final Smash, three games from the Light Gun Series team up: Duck Hunt, Hogan's Alley, and Wild Gunman. A flock of ducks fly by, warping anyone they hit to the Wild West. There, a posse of gunmen will use foes for target practice! If the ducks don't hit anyone, though, nothing happens besides some birds passing through.
The NES Zapper Posse trophy is part of the Light Gun Series Trophy Box. Interestingly, it features a white duck as part of the flock, which is the same color of the ducks projected from the projector of the Kôsenjû Duck Hunt light gun game released in 1976.
Every element of the Final Smash, including the dog, is represented in the same 8-bit graphics as they appeared in their original games. The exception is the Hogan's Alley cans, which use the same model as the ones summoned by Trick Shot.