Bruce Coville

Finding himself on a vast prison planet on which his twin brother is trapped, Clive Foliott encounters an array of adversarial dwarves, cyborgs, and aliens from different parts of time and space. Original.

When Grizelda decides to seek revenge on King Mildred by creating the largest, fiercest dragon in the kingdom, an unlikely trio of argumentative heroes--an elderly squire, a young page boy, and a headstrong, tomboy princess--set out to destroy it. Simultaneous.

A not-very-bright giant named Harry outsmarts a wicked wizard who tries to turn his friends into stone toads