If you're wondering how to unlock characters in Super Mario Party, the process is easy and rewarding. Although most characters are available from the start, four secret characters—Donkey Kong, Diddy Kong, Dry Bones, and Pom Pom—can be unlocked by exploring different game modes. As you play through Party Plaza, you'll eventually meet these characters, who will challenge you to a minigame. Win the challenge, and they'll join your roster permanently. To unlock everyone faster, try playing a variety of modes instead of repeating the same one. This is the quickest way to complete your character collection and enjoy the full game.