The Codrex contained the vehicles Axalara T9, Jetrax T6, and Rockoh T3, all built by Artakha. When the Toa Nuva, Takanuva, and "Toa" Ignika entered the Codrex, Makuta Antroz snuck in before the energy field would reenable itself. Lewa, Pohatu, and Kopaka found the T-Series vehicles, though before Kopaka could claim the Jetrax, Antroz hijacked it. "Toa" Ignika later decided to sacrifice his body to reactivate the ancient systems of the Codrex and the Energy Storms. Unlike other locals in Karda Nui, the Codrex was unable to be destroyed by the Energy Storms.