Introducing a new G FUEL flavor inspired by the powerful friend of Sonic, Knuckles the Echidna! G FUEL teams up with SEGA® of America Inc. once more to bring fans another exciting new flavor: G FUEL Knuckles Sour Power! Fans will love this super-charged SOUR punch of Raspberry straight from the spiked hands of the Guardian of the Master Emerald! Grab your G FUEL Knuckles Sour Power Tub to help you get the energy to beat Dr. Eggman or play games with your friends all night, without the need for the Chaos Emeralds!