Raiden, whose real name is Jack, is a central character in the Metal Gear series, initially introduced in Metal Gear Solid 2: Sons of Liberty as a rookie soldier. He evolves significantly throughout the series, transitioning from a somewhat naive character to a hardened, cybernetically enhanced warrior. Known for his agility and skill with a blade, Raiden plays a critical role in the fight against corrupt forces and advanced technology. His character explores themes of identity, transformation, and the struggle to maintain humanity amidst chaos.