Gray Fox (real name Frank Jaeger) is a major character from the Metal Gear series, who has appeared since the original Metal Gear, until his death in Metal Gear Solid. In
Metal Gear Solid, he is voiced by Greg Eagles. However, Rob Paulsen voiced Gray Fox in Metal Gear Solid: The Twin Snakes, the Gamecube remake of Metal Gear Solid, as well as for Super Smash Bros. Brawl.
Gray Fox makes an appearance in Super Smash Bros. Brawl as an unlockable Assist Trophy in his Cyborg Ninja form. He is unlocked as soon as the player unlocks Solid Snake. His attack involves moving quickly around the stage and swinging his sword, with his swings capable of reflecting projectile attacks. If he falls off a stage, he can come back from the top. He can also teleport from anywhere in the stage and come back from the top. His skill, according to DOJO!, is so great, that "it makes a few smashers want him as a playable character".
When summoned from an Assist Trophy, he will call out either "Make me feel alive again!" or "You can't defeat me with a weapon like that." or "Hand-to-hand. It is the basis of all combat." These are actual lines from Metal Gear Solid. He says different things when fighting Snake. Whenever Gray Fox is summoned while Snake is on the battlefield (regardless of whether Snake or the opponent summons him), he says "Like old times, Snake..." or "That's it! I've been waiting for this pain.".
An enigmatic soldier with great physical and combat skills. Calling himself "Deepthroat" and equipped with an enhanced environmental camouflage suit, he dedicated his life to fighting Snake. In a twist of fate, Gray Fox ends up protecting his sworn rival from Metal Gear REX. Long ago, Gray Fox fought Snake in Zanzibarland.
Gray Fox is voiced by Rob Paulsen in this appearance, with his voice samples lifted directly from The Twin Snakes; in the Japanese version, he uses archived sounds from Kaneto Shiozawa, his actor in Metal Gear Solid, who passed away in the year 2000.
Gray Fox's projectile-reflecting ability is a reference to his hand-to-hand combat with Snake in Metal Gear Solid, where he blocked bullets with his sword to make Snake attack him without weapons.