Monster Army

Monster Army is a huge army made of large titans, each having his/her unique skills and powers. The army has been really succesful, but it once lost in Bio-Land, to Matoran Hordika's Army. But while retreating, the Leader of the Monster Army mutated the leader of the other army, Matoran Hordika.

After this event, the army has had more battles with other lands. Some have been succesful, some haven't.

Trivia

 * The Monster Army has never attacked Tapio's Original Homeland before, but will do it.