|This article is a stub.
You can help Ninjago Wiki by expanding it.
The Key-Tanas are three key-shaped swords that exist in the virtual world of Prime Empire. The Ninja will have to travel across the game to find them and take them to Unagami's throne room to challenge him.
The yellow Key-Tana was briefly shown when the Speedway Five-Billion was being advertised.
A Key-Tana briefly appeared as a silhouette when an old commercial of Prime Empire was being shown.
When united at Unagami's throne room, the user may challenge him, for he is the ruler of Prime Empire.
- The Key-Tanas are a portmanteau of "key" and "Katana."
- The Orange Key-Tana is the only Key-Tana with an unknown location, as the Yellow Key-Tana is the grand prize for winning the Speedway Five-Billion in Terra Technica while the Purple Key-Tana is guarded by the Cyber Dragon in Terra Karana.