Originally Posted by Evil Mastermind
i already have 3 anyway, but you never know...
and i still need regice and registeel...
An easy way to get the Regis is bring an escape orb and the rock/ice/steel part or music box. Go through till you beat the three, then on the next floor(a floor with a regi hangout will deactivate it, making you loose it) use the escape orb. Any Regis that joined will "escape" with you.