Can a player card with an encounter set icon, such as Dr Henry Armitage, be added to my deck before a campaign starts?

Question

Accepted Answer

No. Cards backed with an encounter set icon cannot be included in deck building; they enter play or your deck only when the campaign tells an investigator to add them.

Arkham Horror: The Card Game (Revised Core Set)

Can a player card with an encounter set icon, such as Dr Henry Armitage, be added to my deck before a campaign starts?