Sheath

Sheath (シース Shīsu) is a character from the Namco Cross series, first appearing in Project X Zone 2 as one of the main antagonists.

Profile
An agent from the North American branch of Ouma, a rival organization to Shinra devoted to sowing chaos across the world. Together with Saya, she travels across the different worlds while working to realize Ouma's nefarious schemes.

Besides her rabbit ears, her most distinctive feature is undoubtedly her unique and enthusiastic spin on the Japanese language. Relentlessly cheerful, she remains unperturbed no matter the surrounding circumstances, and she is never one to hold back from saying what she really thinks, using whatever words she can summon to get her point across.

During combat, in addition to her fiery "Flame Blade", her automatic pistol "Flood Gun", and her deadly sharp "Draft Knife", she also fires beams from her wristwatch-like shield "Earth Clock" and can use playing cards to trap her opponents, giving her a formidable arsenal. On top of all that, she has the ability to create clones of herself.

Project X Zone 3: War of Infinite Worlds
Sheath appears as one of the game's major antagonists. Three years after the deaths of Saya and Sheath and Ouma's defeat in the events of Project X Zone 2, Scheisse von Arschloch, leader of Ouma's European branch, rallies the survivors of the organization and revives Saya and Sheath, among many other dead villains, to complete the goal of ultimate and final victory of evil and darkness over the Multiverse.

After her resurrection, Sheath retains her goofy and cheerful personality but becomes more relentless on the heroes of Shinra more than ever. At one occassion, she orchestrates a labyrinth she calls "Sheath's Crazy Castle 666" to trap the heroes. Sometimes, she would resort to cheap extremes such as piloting MechaGodzilla, just to get rid of her enemies.

By near the end of the game, the heroes and villains of all the remaining worlds of the Multiverse rally together and team up to foil the Anti-God's scheme to undo all of creation by travelling back to the beginning of the time. While the heroes go back to the dawn of time to confront the Anti-God, the villains on the other hand, led by Saya and Sheath, travel back four billion years in the past to stop renegade angel Lucifer from doing the action that cause the once-singular Universe into the Multiverse. Unfortunately, they fail and Lucifer kills Saya and Sheath.

Project X Zone 3: Sacred Destinies
To be added...

Project X Zone III (RedTheHedgehog140)
Sheath appears as a Boss Unit.

Project X Zone 3: The New Legend
Sheath appears as a Pair Unit, teaming up with her partner Saya.

Project X Zone 3 (TenchiMuyoFan97)
Sheath appears as a Boss Unit, being one of the main antagonists.

Capcom VS. Bandai-Namco: The Battle of Legends
She is one of the characters from the Namco side; her rival is Lord Raptor from Darkstalkers.

Super X Dimensions
Sheath initially appears as a Rival Unit, before becoming a playable Solo Unit.

Just Dance: Anime Dance Tour
Sheath is one of the dancers who dance at All The World's Stage along with Reiji, Xiaomu and Saya.

Trivia

 * Sheath shares the same voice actress (Kotono Mitsuishi) as Usagi Tsukino/Sailor Moon whose first name is the Japanese word for "rabbit", which is Sheath's animal motif.