F
Fang the Sniper - the Japanese name for Nack the Weasel
Fireball Spin Dash - a move Sonic the Hedgehog
can perform in mid-air by having a Flame Shield and pressing a button twice in Sonic the Hedgehog 3, Sonic & Knuckles, and Sonic the Hedgehog 3 & Knuckles
Flame Shield - protects Sonic the Hedgehog, Tails, and Knuckles the Echidna from a fire attack;
it also gives Sonic the ability to perform the Fireball Spin Dash
Fleetway - the publishers of Sonic the Comic, later known as Egmont Fleetway
Flicky - a type of bird that Sonic saves in Sonic 3D Blast
Floating Island - an island that floats because
of the power of the Master Emerald in Archie Comics Sonic the Hedgehog series and Archie Comics Knuckles the Echidna series;
it was later renamed to Angel Island
Flying formation - when the team member that can
fly in Sonic Heroes
acts as the leader; the leader can fly while carrying the other members, throw
the members at enemies, or attack if members are not present
Forcejewel - a jewel in Sonic Shuffle that enables the player to perform
a unique action
Formation - the organization of the current team in Sonic Heroes; the three types are speed formation, flying formation, and power formation
Freedom Emeralds - magical gems that are found on top of the crown of the Acorn
family in Archie Comics Sonic the Hedgehog series
Freedom fighter - the name given to anybody who
fights against Robotnik; i.e. fighting for freedom
Froggy - a frog; Big the Cat's best friend that strangely grew a tail
in the beginning of Sonic Adventure/Sonic Adventure DX