Bolo was an infant male mole that was best friends with Slippy and Tibbles. While he and his friends were looking for vermin in Mossflower Woods, he and his friends were captured by the Wisp. A while later, he, Slippy and Tibbles were rescued by Alderjack, Treescamp, Horlington Bradshaw Vittlescoff III, and Slimbrook.