Tripod (vehicle)

Tripods were three-legged travel vehicles which were famously used by Martians in H. G. Wells' The War of the Worlds. (COMIC: Character Assassin, PROSE: Verdigris, Elementary, My Dear Sheila) As noted by the Third Doctor, Wells was "cleverer than he thought" and tripods like those in The War of the Worlds were actually used by some alien species. (PROSE: Verdigris)

Martian tripods
In an alternate timeline, Martians used tripods when they invaded Earth in 1894. (PROSE: Enter Wildthyme)

In 1969, Señor 105 was certain that Martians did not have tripods. (PROSE: Elementary, My Dear Sheila)

In 1997, Ice Warriors on Mars used vehicles resembling "great camera tripods". (PROSE: The Dying Days)

After humans colonised Mars and terraformed it, there were some legends of a hidden Tripod Graveyard, a deep chasm in an unmapped region of Mars with hundreds of broken rusting tripods. (PROSE: Green Mars Blues)

Tripods used by humans
In AF 291, Allisheer St Marx saw a limbless man riding a steam-powered tripod near the Uptime Gate. (PROSE: Of the City of the Saved...)

During the City of the Saved Civil War, the CXXIs Legion of the Romuline District attacked Clovis District in armoured tripods. These tripods owed their allegiance to the god Mars. (PROSE: A Hundred Words from a Civil War)

Other tripods
The Meercock used tripods with long, spindly legs. (PROSE: Verdigris)

Gardenizens housed themselves within greenhouse tripods. (COMIC: The Garden Rebellion)

When human colonists came to Mnemosyne, Arkive sent tripods onto the moon's surface to investigate them. (PROSE: The Wheel of Ice)