The Lionheart (ライオンハート Raionhāto?) is a Keychain for Sora's Keyblade which appears in Kingdom Hearts, Kingdom Hearts Final Mix, Kingdom Hearts: Chain of Memories, Kingdom Hearts Re:Chain of Memories, and Kingdom Hearts Re:coded.
The Lionheart Keyblade is gunmetal grey, and is designed to resemble Leon's Revolver Gunblade. The blade's teeth and the Keychain's token are both designed after the Griever necklace that Leon wears. This Keychain is in fact present on Leon's own Gunblade.
The Lionheart is Squall's ultimate weapon in Final Fantasy VIII. The name of the Keyblade is a portmanteau of the words lion and heart with the former word referencing what form the Keyblade's teeth and token take. The name of the Keyblade is also derived from Leon's last name.
A keyblade of similar design on the handle is shown in the Keyblade Graveyard in Kingdom Hearts II.