Miltch

Miltch is a main protagonist of My Best Friend Marneao. He is the leader of The Revolutionary Movement Against Heaven and the son of Mariana and Kristoff.

Appearance
Miltch has Caucasian skin and red coloured arms and legs. They are a trait which he inherited from his mom, Mariana. He also has a red rat like tail and two red horns on his head, although the left horn is broken. He has dirty blonde hair, pointy ears and crooked teeth.

He wears a long dark grey coat, a long sleeved stripey shirt and a teal scarf, as well as black pants and black boots.

Personality
Miltch is both cold and calculator and immature. He would craft elaborated plans that most of the time would work, because he considers all the possible outcomes, but he fails to calculate the consequences of his plans. He would react immaturely to some of said consequences and feel really guilty afterwards.

He can be really lively with friends, and is really open when dealing with new people. He's mostly showing a smile and ready to help anyone. He would also joke and prank a lot with the people in the revolution.

Abilities
Miltch is the bearer of the Aspect of Ever-Changing Darkness, which allows him to manipulate the Black Matter, a incredible dangerous mutagen that may corrupt any living creature by simple touch. Contrary to his mom, Miltch can control what the outcome of the mutation will be by manipulating the DNA-breaker sequences in the substance.

He also has the standard demon's abilities such as super strength, high speed, high resistance and is able to fly.

Old Heaven
Miltch was born during the moments of peace in Old Heaven. His dad, Kristoff, would've solved the energy crisis and grew happily with his parents. When Miguel's attack happens, he's evacuated by Yahveh to the cave system that would eventually become Inferni. There he is witness of how Baraquiel kills his father. The angel would try to kill him with his lightning but Miltch is rescued by Azcorra, who would later take care of him like his little brother.

Jacob's Contract
During the time of Jacob's contract, Miltch saw this oportunity to boos the morale of the revolution by using Marneao's image as a banner, since having the prince of Inferni in Earth was a direct infringement on Miguel's rule. He would meet Nina, and would plan the leak of information via Fleites during the market incident that would lead to Gabriel's assassination.

His plans would fail when Lucifer is killed by Baraquiel and Marneao arrested by El Angelinato. He would order Azcorra to rescue Marneao, who would join the revolution that same day.

Soon after, The Revolution would attack the portal, which would end in the assassination of Jacob and the start of the war.

The War
Miltch has been really active by doing constant terrorist bombings in Heaven. The first big plan for the Revolution is destroy all sources of energy, sending a team to destroy the windmills, an he and other team to infiltrate the black matter factory to rescue his mom, Mariana.

Etimology
Miltch's name in Infernian runes is written:

Production Notes
Miltch design is inspired by Mizuta Nobuyuki, a character from Yowamushi Pedal. His name was searched to have at least "Mi" in it.

He was meant to be the revolution leader since the beginning, but the idea of him controlling the dark matter came afterwards, before he would meet with Marneao. Deciding his Aspect, lead to the creation of Mariana and all that involves her.

I also consider Miltch the main protagonist of season 3.