Terra is one of the protagonists of the Kingdom Hearts series who made his debut in Kingdom Hearts Birth by Sleep. Terra is a driven young man who, along with his best friends Ventus and Aqua, was a Keyblade apprentice of Master Eraqus studying to become a Keyblade Master. However, he becomes a victim to the manipulations of Master Xehanort which causes his heart and body to be lost when the dark Keyblade Master possesses him, leaving only his mind to inhabit the remnants of his armor. Before his desolate state, Terra creates a connection with Riku as his successor, allowing Riku to wield the Keyblade in the future.