| Name | Type(s) | Team(s) | Source | Notes | | Fabian Stankowitz | Support Staff | Avengers
| Marvel | | | Fade | | WildPack | Milestone | | | Fairchild | Brick, Youth | Generation Next | | | | Falcon | Flyer | Family of the Bat
| Marvel | | | Falkor the Luckdragon | Unique | Power Pack | Lit: Neverending Story | | | Fandral | | Another Day, Another Dungeon | Marvel | | | Fastback (Timmy Joe Terrapin) | Speedster | Zoo Crew | DC | | | Father Thwaite | Magic, Medical | Another Day, Another Dungeon | Lit: Another Day, Another Dungeon | | | Ferro Lad | Brick | Metal Men | DC | | | Fiddler's Green | Unique | Team Medicine | DC | | | Finlay Campbell | Fighter, Killer
| Suicide Squad | Lit: Deathstalker | | | Fire | | Explorers | DC | Should be with Ice | | Firearm | Fighter | Planetary | | | | Firehawk | Flyer | Birds of Prey | DC | | | Firestorm (Elemental) | Elemental | | DC | | | Firestorm (Ronnie Raymond/Martin Stein) | Unique | Justice League | DC | | | Flame | Elemental | Justice Society | Project Superpowers | | | Flamingo | Youth | Generation Next | | | | Flash (Jay Garrick) | Speedster | Justice Society | DC | | | Flash (Barry Allen) | Speedster | Justice League | DC | | | Flash (Wally West) | Speedster | Titans | DC | | | Floronic Man | Elemental,Redeemed
| Planeteers
| DC | | | Flying Fox | Magic | Family of the Bat | DC | | | Flynn | Journalist | Journalist | Lit: Deathstalker | | | Forager I | Fighter | Challengers of the Unknown | DC | | | Forager II | Fighter | Forever People | DC | | | Forgotten One | Eternal | Planetary | Marvel | | | Franklin Richards | Super Psychic | Fantastic Force, Power Pack | Marvel | | | Fred | | Mystery, Inc. | Scooby Doo | | | From the Vortex | Super Person | Team Science | | | | Fuji | Brick | Mutant Ninja Turtles | Wildstorm | | | Fury I | Fighter, Brick, Unique | Rebels | DC | | | Fury II | Brick | Strange, Inc. | DC | |
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