Zena Leon  

, ゼナ・リオン

What is the name of the highest ranking officer on board the Estanatreich? Can you tell me more about her background? Did she once fight in a battle with Fluger known as Little Big Horn? If so, what was her role and how did it end up being called "Little Big Horn"? Who does she partner with in the Zenga tournament? What is the weapon of choice for this partnership? Is there any indication that they had a romantic relationship? Lastly, can you provide information about the TERRA and NESS joint-investigative team researching the Old Timers Legacy, including who was involved in it?