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.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.