Terra (Japanese: テラ Hepburn: Tera) is a fictional character from Square Enix's video game franchise Kingdom Hearts. He was introduced in Kingdom Hearts Birth by Sleep as one of the three protagonists. He had a cameo appearance in a secret ending of Kingdom Hearts II and its re-release Kingdom Hearts II Final Mix; the later game included an optional boss fight against the Lingering Will (留まりし思念 Todomarishi Shinen), a hollow armor containing Terra's mind. In Birth by Sleep, Terra appears as one of the apprentices from Master Eraqus who trains him alongside his friends Aqua and Ventus to become masters of the Keyblade weapon. When Master Xehanort disappears, Terra sets out to find him and tames the darkness within himself.