Characters in Mystery of the Desert Giant

Frank Hardy

Also in Crawling with Zombies, Deadly Strategy, Time Bomb, At All Costs, Break-Up!, Deception on the Set, A Figure in Hiding, The Twisted Claw, Showdown at Widow Creek, The Disappearing Floor

Joe Hardy

Also in Crawling with Zombies, Deadly Strategy, Time Bomb, At All Costs, Break-Up!, Deception on the Set, A Figure in Hiding, The Twisted Claw, Showdown at Widow Creek, The Disappearing Floor

Chet Morton

Also in The Disappearing Floor, The Mystery of the Flying Express, The Clue of the Broken Blade, The Melted Coins, The Sign of the Crooked Arrow, The Secret of the Lost Tunnel, The Wailing Siren Mystery, Secret of Pirates' Hill, The Viking Symbol Mystery, The Vanishing Thieves

Fenton Hardy

Also in The Twisted Claw, The Clue of the Broken Blade, The Flickering Torch Mystery, The Secret Panel, The Secret of Skull Mountain, The Blackwing Puzzle, The Mystery of the Spiral Bridge, The Jungle Pyramid, The Firebird Rocket, The Crowning Terror

Philip Dodge

Mr. Brownlee

Williard Grafton

Clifford Wetherby