Ixcila is the stored personality and memory of a person - basically, their life essence. It can be technologically captured and preserved, even beyond that person's death. It is part of Arn biotechnology, and the Ixcila can be revived if it has a host person to live in. Known Ixcila include those of the Hork-Bajir Dak Hamee (which was destroyed by the Yeerks at some point) and of his wife, Aldrea-Iskillion-Falan. Aldrea's Ixcila was later used to help the Animorphs and the Free Hork-Bajir find a collection of weapons that had been hidden by the original Aldrea, and was hosted by Cassie while this was in progress. (See Aldrea-Iskillion-Falan for more details.)

Andalite technology Dome Ship | Escafil Device | Hirac delest | Mirrorwave call | Z-space transponder | Morphing | Mag-Hover Truck | Quantum Virus | Shredder | Gleet Bio-Filter
Yeerk Technology Anti-morphing ray | Dracon beam | Gleet Bio-Filter | Kandrona | Kandrona Rays | Nova-class Empire Ship | Pool ship | Blade ship | Mag-Lev Train | Hunter-Killer Robot | Yeerk Pool | Bug fighter
Ketran Technology Explorer | Time Matrix | Fire-And-Forget Explosive Homer | Uninet | Adge
Other Dropshaft | Ixcila (Arn) | Pemalite crystal | Skrit Na Saucer | Hawjabran Colony Ship | Hawjabran Freighter