Boots is an affectionate and friendly two-year-old. Boots (Margaret) - Gregor's youngest sister, named 'Margaret' after her paternal great-grandmother the name 'Boots' originated because of how she liked to steal the family's shoes during the winter.He develops romantic feelings for Luxa, but their relationship does not progress much further than a first kiss in Gregor and the Code of Claw. In Gregor the Overlander, he bonds with the flier Ares. In Gregor and the Code of Claw, he learns echolocation, a valuable skill for fighting in the dark. Gregor tries to avoid fighting when he can, at first because he believes that a peaceful resolution to a problem is the best kind of solution, and later because he is scared of how good he is at fighting due to his rager 'powers'. He is also a rager, or someone who is overcome by a kind of powerful frenzy in battle that is hard to control (similar to the berserkers of Norse mythology). He is believed to be the 'warrior' described in Bartholomew of Sandwich's prophecies. Gregor - Gregor is an eleven-year-old New Yorker who discovers the Underland when his little sister Margaret, nicknamed Boots, falls into their apartments ventilation system.These differences are not permanent, however, as all Underlanders are descendants of Overlanders who lost these qualities over time. In general, they have darker skin and hair than Underlanders, and their eyes range from blue to brown. The term Overlander refers to any human born in the Overland to parents who were also born there. The 'killers' below are organized by ' ethnicity'. In their own languages, however, the animal species of the Underland refer to humans as killers. When speaking to them, most Underland inhabitants call humans by the name they prefer so as not to insult them. These names usually refer to a common trait or habit of the species. This is a list of The Underland Chronicles characters, organized according to the species names given in the series.

Gregor and the prophecy of bane