Gold Drop is an S-grade pet that can only be obtained in the Invite Event. The pet has the ability to generate a Giant Gold Coin (worth of 100 coins) for every 11 seconds. This pet was many players' favorite pet since back in earlier seasons, due in fact that the generation interval is very short, no such coins can be found in any stages, and it is a very easy shortcut for getting more coins, especially to new players. The earlier version of the pet would generate up to every 12 seconds, however the generation interval for this pet was buffed up one second faster in 18 December 2014.
The first event which had Gold Drop as a reward was the second Invite Event which appeared back in Season 1 of Cookie Run, circa March 2014. The pet is still available at every Invite Event since its first appearance. The requirement for earning Gold Drop has been always changing in each Invite Event - currently players must invite 30 friends to get the pet. If the player has already obtained Gold Drop from a previous Invite Event, 70,000 Coins will be gained instead.
It is said that Gold Drop is the drop of all drops in the description, and with the addition of a golden crown on Gold Drop's head, it is suspected that Gold Drop is some sort of Prince in the Drop family.