Knock Battle Mode is one of four different Battle Formats found at the Trainer Tower. Unlike all of the other Battle Formats at Trainer Tower, you will need to defeat three consecutive trainers on each floor, with there being eight floors in all. Each opposing trainer will have only one Pokemon at the same level of the highest leveled Pokemon in your Party. Defeat the three trainers on all eight floors in Knockout Battle Mode to receive the Metal Coat, an Evolutionary Item that can be held by Onix or Scyther in order to Evolve into them into Steelix or Scizor, respectively, when traded.
Knockout Battle Mode Pokemon Trainers
Biker Jordy: Magby
Biker Ernest: Togepi
Cue Ball Gabriel: Smoochum
Hiker Mike: Charizard
Crush Girl Rebecca: Flareon
Blackbelt Nicolas: Poliwrath
Picnicker Camryn: Miltank
Aroma Lady Natalia: Vileplume
Cool Trainer Kathleen: Lapras
Sailor Brennan: Chansey
Fisherman Kaden: Seaking
Gentleman Emanuel: Vaporeon
Beauty Maura: Nidoran Female
Lass Mikaela: Nidorina
Engineer Flint: Nidoqueen
Rocker Ben: Ampharos
Engineer Camden: Granbull
Scientist Zackery: Misdreavus
Tuber Priscilla: Goldeen
Lady Charlotte: Qwilfish
Swimmer Shania: Mantine
Pokemon Ranger Chelsea: Starmie
Pokemon Ranger Trenton: Arcanine
Cool Trainer Albert: Venusaur