Bacarra is a human-born demon affiliated with the Raucos and the leader of the Nemesis Masquerade squad. He appears in the main series as well as in Reign of the Lost Souls and has the protagonist's role in Magna Spirit. He is a Soul Magic User.

Name: Bacarra
Human Name: Rentaro Soto
Nickname: Baca-chan
Race: Demon
Former Race: Human
Birthday: Jan 16
Zodiac Sign: Capricorn
Physical Age: 17
Actual Age: 44
Height: 1.80m or 5'9
Place of Birth: Iyesgarth (State of Sityras, Uscea)
Affiliation: Rauco 
Relatives: unknown
Magic: Soul Magic
Hair Color: bright green
Eye Color: red
Original Eye Color: light green
Mana Level: 119.354 mp
Prominent Characteristics: conspicuous bright green hair, incredibly deep voice
Phobias: Trypanophobia (extreme fear of medical procedures involving injections or hypodermic needles)
Status: Alive

Appearance: 

Bacarra is a relatively tall young man with short, light green hair surrounding his face and falling over his forehead. A single strand of hair is sticking out on top of his head. He has fair skin, black, tear-shaped tattoos under his eyes and the for demons typical red eyes and pointed ears. He wears a white collar and a two-part top with black sleeves revealing his bare shoulders, the right one covering is whole arm while the left one is remarkably shorter, and a white overall revealing his collarbone with golden buttons on either side. He furthermore wears ash gray, wide pants. He has a bright green training glove on his left hand and wears a bright green bracelet with white spikes around his wrist. His left forearm is wrapped in a white bandage that covers the tattoo which he needs to change into Soul Essence Mode. 
When in Soul Essence Mode, Bacarra takes off his bandages and upon activation, the black tattoo on his left forearm will start glowing in blue, initiating blue marks to spread all across the left side of his body including his neck and face. 
When Bacarra uses Sydonai's soul to acquire the Sensor Eyes, he will receive another mark over his left eye which covers the left side of his face almost entirely. Also, his eyes will change to a blue color. 
He also has a Nemesis Masquerade attire, which consists of a long, black coat with red and white patterns on the shoulders, sleeves and lower parts, including a red, somewhat circular symbol on the back. It also includes a red and white half-face mask. 

Bacarra in Soul Essence Mode and with activated Sensor Eyes. 

Personality: 

Bacarra is neither very social nor very talkative. He likes being by himself, enjoying to just relax in the woods and nap. If he talks to people, he has a tendency to be non-compassionate and cold towards them, oftentimes appearing rather rude and harsh. He's not known for showing a lot of interest in other people's business and problems. He mostly wears a deadpan expression on his face which lets other people falsely assume he's emotionless. He is not, but doesn't show his emotions all too often due to being a rather withdrawn and calm person. His extremely deep voice doesn't carry much emotion or expression either, which makes it sound almost monotonous. He smiles rarely and no one has ever seen him laugh just yet. He seems to be annoyed of interacting with certain people too much when they disappoint his expectations. Due to his magic's nature, Bacarra is known for hanging out with ghosts and listening to their lullabies while being alone. He usually has an "I don't care"-attitude and his calmness and unfazedness gives him perfect qualities for a leadership role. He doesn't really get angry at anyone, unless they call him "Baca-chan", which he absolutely hates. But even if he is mad, he doesn't yell at other people. The other demons describe Bacarra as "difficult" because it is harder to find out what he likes than what he dislikes. He mostly doesn't participate in things that are supposed to be fun, which is why his friends mostly call him a "bourgeois". 
When Bacarra activates Soul Essence Mode, he sacrifices his soul essence, which emotionally impairs him for the time being. Only when that happens, Bacarra is physically not able to have any emotional assets. 

Past: 

Bacarra was homeless because his parents both died of heart disease. He lived on the streets for a while until he was picked up by a doctor and taken to his home- not however to be taken care of. Said doctor used Bacarra as a medical dummy, trying out different meds and drugs on him to research their effects, not at all caring about Bacarra's health at all. He even purposefully infected Bacarra with all sorts of diseases to test out different medication and their affectiveness. Due to being exposed to these irrational masses of drugs and meds, he developed extreme paranoia. He constantly hallucinated, screamed and had panic attacks, making him uncomfortable being around anyone in the process. Living in constant fear and panic eventually drove Bacarra to trying to commit suicide by grabbing a syringe and ramming it through his neck. However, the doctor who did the experiments didn't plan on letting him die because he needed him as his lab rat, so he saved Bacarra's life. Bacarra's health quickly deteriorated in a short period of time, which, in the end, in addition to the emotional abuse, fear and pain he experienced, caused him to turn into a demon. An emotional outbreak caused him to enter Soul Essence Mode for the first time and use the flames of wrath to burn the whole place down.  However, he also trapped himself in the flames as, back then, he didn't yet know how to control them. Eventually, Lucifer showed up and saved him from getting burned by the fire he laid himself. Bacarra never really recovered from this, which is the reason he often seeks solitude. 

Relationships: 

To Inukai: Being squad mates, Bacarra respects and values Inukai as a comrade. He trusts her enough to do stuff on her own, even. He isn't seen interacting with her too often due to being by himself mostly, but it's clear he likes her. 

To Hiisara: Being the third member of his squad, Hiisara fully submits herself to Bacarra's orders. It's a relation based on mutual trust. 

To Lucifer: With Lucifer being his savior, Bacarra dedicated himself to fight for his cause and follow him where ever needed. He gets mad at everyone who dares tarnishing his name or putting words into his mouth, pretending to know anything about him. 

Magic and Abilities: 

Bacarra's magic also presupposes excellent weapon mastery. Bacarra wields Soul Magic, also commonly referred to as Spirit Magic, an Infinity Magic Force that allows him to get in contact with the dead, summon their spirits and use his own body as a medium for them to enter so he gains access to their powers. He also is able to turn them into regalias, their weapon forms. This form of magic does not have spells, it's rather a set of usable skills such as: 

-Soul Summoning, a skill that allows the user to summon the spirit of a dead person and get in contact with them. Since it requires to empower the ghost with mana to keep them manifested, the summoner also allows them to be able to practise their own magic and thus affect the surroundings with it. With that, they can technically temporarily recruit a bunch of spirits to fight at their side. 

-Merging Soul, a skill where the user submits his own body or an object for the souls to use. By allowing a soul to temporarily coexist in their body or inside a random object, the user gains access to said soul's magic capabilities. Types of magic Bacarra has knowingly used like that: Destruction Magic (Lilith), Nature Magic (Fuka), Sensor Magic (Sydonai), Divine Magic (Neo Lucifer), Mythical Healing/Regeneration Magic (Neo Lucifer), Shape Shifting (Neo Lucifer) and Light Magic (Neo Lucifer). 

-Oversoul, a skill that allows the user to turn souls into their familiar weapon form and make them his regalias. Even when in their weapon forms, the user still has access to their magic capabilities and can launch magic attacks with them. Types of magic Bacarra knowingly used like that: Sin Empowerment (Jin'chiru, Double Scythe Form), Explosion Magic (Zepharo, Gun Form)

-Soul Breaker, a skill that allows the user to temporarily stun an enemy by practising influence on their spiritual self. This skill can also make them lose consciousness. 

-Soul Blast, a skill that allows the user to gather mana and hurl a blast at the opponent. When hit by this blast, the mana will penetrate the opponent's soul and render their memories. This will also inevitably cause them to change in personality. 

-Golden Excalibur, a skill that enables the user to "collect" the determination and faith of their partners and channel it into a powerful blow.

-Soul Essence Mode, a skill that "opens" the gate to the user's own soul, gathering power from their own soul essence. Using this power, the user can channel their own emotions into powerful manifested forms of magic. However, soul essence isn't durable, which means it can be dissipated. Consuming all soul essence will render the user unable to have emotions for the time being until the essence has fully restored. 

-Magna Ride, a spell with extreme power. The user opens all gates to their soul at once to channel all power within it into manifested magic which they can unleash onto their target. However, once this spell has been cast, the user will lose their emotions forever, as the spell requires an ultimate sacrifice to be made in exchange for this extreme power. 

Weaknesses: 

-Since Soul Magic is an Infinity Force Magic, the only weakness it has is itself. Only Soul Magic is effective on Soul Magic, which is logical since both soul magic users would be able to interfere with one another's spirit allies. 

Quotes: 

"Remember this: Simply not wanting to die isn't what will keep you alive. The only thing that will keep you alive is... wanting to live." -to an unnamed Arashi

"Mostly, it's loss which teaches us about the value of things." -to himself

Trivia: 

-Bacarra's name is derived from "Bakāsura", a demon of Hindu mythology with a bottomless appetite for human flesh that devoured countless men. 

 -Bacarra would potentially be able to resurrect/reincarnate souls into their own or a different body, however, it's a forbidden skill due to it violating the divine laws of nature, thus, Bacarra can't use it. 

-Bacarra's hair is dyed. His original hair color is blonde, but due to the influence of drugs and medication in his past, it turned into silver-gray.

-Bacarra is one of six Infinity Force wielders. 

-Bacarra's flower is the white Lilly, which is a popular graveside flower, for it represents the souls of the deceased.