Gyro Ball is a Steel-type attack with higher power the slower the user is than the target. If the opponent has used Minimize, Body Slam will do double damage and never miss. Known Pokémon that can learn Gyro Ball naturally include Alolan Sandslash, Bronzong, Bronzor, Dhelmise, Electrode, Ferroseed, Ferrothorn, Forretress, Hitmontop, Jigglypuff, Kantonian Weezing, Koffing, Lickilicky, Magnemite, Magneton, Magnezone, Miltank, Onix, Pineco, Sandshrew, Staryu, Steelix, Typhlosion and Voltorb. Smearg
TM, International Pokédex Wiki
Koffing, Sonic Pokémon Wiki
Hisuian Goodra Location, Evolution, and Learnset
Electro Ball (move) - Bulbapedia, the community-driven Pokémon encyclopedia
Poké Ball Plus, Pokémon GO Wiki
Saturn's Bronzor, International Pokédex Wiki
Terapagos, Pokémon Wiki
Electrode (Pokémon) - Bulbapedia, the community-driven Pokémon encyclopedia
Pokemon 109 Koffing Pokedex: Evolution, Moves, Location, Stats
Dhelmise, VS Battles Wiki