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Brock's Pineco evolved into Forretress in Entei at Your Own Risk in order to save a bunch of Pokémon at a hot spring from Team Rocket. Brock's Forrestress was the only Steel-type Pokémon owned by a main character from its evolution until Battle Frontier, when Brock's Onix evolved into Steelix. When Brock went to Hoenn, the only Pokémon he brought with him was his Forretress.
Forretress conceals itself inside its hardened steel shell. The shell is opened when the Pokémon is catching prey, but it does so at such a quick pace that the shell's inside cannot be seen.
Forretress conceals itself inside its hardened steel shell. The shell is opened when the Pokémon is catching prey, but it does so at such a quick pace that the shell's inside cannot be seen.
Forretress's name is a combination of forest and fortress. It may also contain turret referring to the nozzles on its body that it uses to launch Spikes.
This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.