It occurred to the Eighth Doctor that Geronimo would have been puzzled to know he would be remembered mainly by people who were about to fall from a great height. (PROSE: The Shadows of Avalon) The Eighth Doctor joked to Charlotte Pollard that Geronimo taught him the greeting "How". (AUDIO: Storm Warning)
Name used as an exclamation Edit
Geronimo's name later came to be popularised as a battle cry, often uttered before someone attempted to do something daring or dangerous. The Fourth Doctor, (AUDIO: White Ghosts) Eighth Doctor, (AUDIO: Dead London) Ninth Doctor (COMIC: The Love Invasion) and Tenth Doctor (PROSE: The Hopes and Fears of All the Years) all used the word.
The Eleventh Doctor adopted the word as a catchphrase, often shouting it out before engaging in a dangerous activity (TV: The End of Time, The Eleventh Hour, et al). The Twelfth Doctor used the phrase once, alongside Clara Oswald, as a signal to call in the Paternoster Gang. (TV: Deep Breath)
Companions and others Edit
Ace cried it out while throwing herself into an interstitial vortex to the dimension of Morgaine. (TV: Battlefield) Bernice Summerfield used the expression on at least one occasion. (AUDIO: Oh No It Isn't!) Dudley Jackson yelled out "Geronimo!" as he entered the time bubble of Stockbridge, likely towards his death. (AUDIO: The Eternal Summer) When the Eleventh Doctor, thinking that Amy Pond was scared, tried to comfort her, she yelled "Geronimo" to show him that she wasn't scared. (TV: Asylum of the Daleks) Clara Oswald yelled "Geronimo" when she was forced to jump out of a spaceship passing through a wormhole, in hopes of the Eleventh Doctor catching her with his TARDIS. (COMIC: Sky Jacks)