Monsters are created by XANA in Lyoko to get rid of Team Lyoko and protect XANA's activated towers, but, more importantly, secure Aelita for XANA. There are a wide range of monsters, and most of them are unintelligent brutes that live only to serve their master, but some have gained sentience. They materialize into Lyoko, and each monster takes up some memory in the supercomputer.
--------------------------------------------Monsters On Lyoko---------------------------------------------
-Bloks
-Krabs
-Hornets
-Megatanks
-Tarantulas
-Kankrelats
-Creepers
-Mantas
-Scyphozoa
-Guardians
-Sharks
-Kongres
-Kalamars
-Kolossus
---------------------------------------Monsters on the real world-------------------------------------------
-Spectres
-Zombies
-Polymorphic Clones
