Hidden Pure Goods, also known as Hidden Heart of Gold are Pure Goods who aren’t revealed to be good at first, usually a case of Good All Along (Horace Nebbercracker, The Titan, SMG0, Leif, Papyrus, Amity Blight, John Coffey and Iroh), or morally neutral or bad characters (Princess Luna, The Collector, Mika Misono, Sae Niijima and the anime version of Meta Knight) before redeeming themselves. Eventually, these heroes reveal that they're very noble.

To keep this category consistent, please do not add Pure Goods that are already shown to be good in one installment but aren't shown to be good in installments that chronologically take place before that installment because we already know they are good. They should instead fall under Wholly Reformed, Redeemed Villains, and/or False Antagonists, unless their corrupting qualities are only faked for the former two categories. This category is only for Pure Goods who were not shown as heroes until later in the story. However, many (but not all) of the characters under this category are False Antagonists.

Their counterpart is Hidden Pure Evil villains.