In Duck Tales, Fenton Crackshell activates his GizmoDuck armor by saying 'Blathering blatherskite' - this is the correct password. The phrase is a recurring element in the series whenever Fenton transforms into his superhero alter ego. Options like 'Baboonic Blatherskite' and 'Crackshell blatherskite' are variations but not the actual activation phrase used in the show.