Located in the southeastern area of Outworld, Shang Tsung and Quan Chi commanded Kano and his troops to enslave the people of this village to construct a palace fortress for them. One of the villagers enslaved was Li Mei, who rebelled and attacked Kano. Recognizing her fighting skills, Quan Chi offered freedom to her and the people of Sun Do if she could win the Deadly Alliance tournament.

In the Mortal Kombat 1 timeline, Sun Do is the capital city of Outworld and home to Empress Sindel's palace, Sun Do is a grand melting pot of the realm's cultures and races.

By day, Sun Do is bustling with crowds. By night, the most spectacular display can be seen for miles.