Shelf Sheffield(シェルフ・シェフィールド), widely known as the Flame Tiger, was the unit commander of the Crossbone Vanguard's special operations Dark Tiger mobile suit corps . He appears in the Mobile Suit Gundam F91 Silhouette Formula manga.
He is reputed to be one of the Vanguard's most experienced MS pilots and was known for his excellent piloting skills as well as for his severity .
Commanding the Crossbone Vanguard's ship Zamouth Zena, Shelf Sheffield is deployed at the Zebra Zone on UC 0123 to oversee the top-secret testing of the Vanguard's new Den'an Zon mobile suit. When test is compromised by the arrival of Anaheim Electronics' vessel Bladewood, Shelf launches with the pilots of the Dark Tiger Squadron in an attempt to destroy the ship to maintain the secrecy of the operation.