Amalthus

Praetor Amalthus is the leader of the Indoline Praetorium in Xenoblade Chronicles 2. He is extremely old despite his appearance, which is unusual even for an Indoline. He is also the driver of Fan la Norne, Malos and Cole, and a Blade Eater.

History
When Amalthus was a child he and his mother were forced to flee from a group of men. His mother hid him and was killed by the men. Amalthus eventually found the corpse of his mother in the middle of the men's camp and used a rock to kill the men as they slept.

Years later Amalthus traveled around Alrest to spread his own teatching about the nature of the world and help refugees. One day he found a soldier he had helped heal robbing a home and killing the one inside, before he could kill the baby who was still alive, Amalthus stopped his hand and killed the soldier. After that he was left wondering if The Architect intended the world to be this way.

To find some answers, Amalthus became the first to climb the World Tree and reach Elysium. However, the Architect saw his old self in Amalthus and did not want to appear before him, letting him take the Core Crystals of Logos and Pneuma.

When Logos awakened as Malos, his nature was deeply influenced by Amalthus hatred for the world. This only renforced Amalthus' belief that the Architect's will was for him to become the one to cleanse the world from all of those who are unworthy of the Architect. When Malos started to sever his ties with Amalthus, the Indoline ploted to find someone who could awaken Mythra and sent the duo after Malos.

After the Aegis War, Amalthus became the new Praetor and began to fear that the Kingdom of Torna's beliefs would threaten the influence of the Praetorium so he sank the whole Titan at the bottom of the Cloud Sea and put the blame on the Aegises.

At some point, Amalthus used refugees from Torna to create Blade Eaters, by fusing children with Core Crystals. One of these refugees was Mikhail, who survived when the others were all eliminated by Amalthus. He used his knowledge of the Blade Eater technology to implent a part of Haze inside him, which extended his life span and gave him control over Blades and Titanalike. 500 years after the war, Amalthus find Pandoria and an half dead Zeke in a forest. He use his knowledge of the Blade Eater technology to implent a part of Pandoria's core crystal inside Zeke's body, saving his life.

Realising the return of Malos and the plans of Torna he had Indol outfitted with weaponry similar to that of Temperantia in order to stop Jin and Malos if they tried to climb the World Tree.

He met the party multiple time and helped them to reach the Kingdom of Tantal with the hope that the problems created by the existence of the two Aegises would just solve eachother. When he realised that the party failed to stop Malos, he decided to intervene. He attacked the Torna ship with Indol but Mikhail sacrificed himself to destroy the Titan.

Amalthus then put on his armor powered by Core Crystals and engaged the party himself. Amalthus is defeated and starts to damage the World Tree to take the world down with him. Jin then used what remained of his energy to freeze the Praetor and ultimately kill him.

Battle
Amalthus is fought a boss at level 68 at Lv. 4, Megrez in the Upper Level of the World Tree.