Borderlands 3 - Maliwan Notebook - Official Merchandise from 2K Games and Gearbox Software Featuring the logo of Maliwan, the weapon manufacturer of Pandora. The Children of the Vault represents the antagonists in Borderlands, more precisely the twins Tyreen and Troy Calypso The notebook, in A5 format has approx. 100 pages and a hard cover. For fans of the Borderlands series this notebook is a must have and makes a perfect gift for a loved one.