Seth is a supporting character from BRAWLZ: Return of the Messiah
Seth is the biological father of Kento Kawasaki, and grandfather of Natashi. For unspecified reasons Seth left his son, Kento, at a very tender age with Kaima Kawasaki and the Kawasaki clan and he was raised as a Metrionian.
In the beginning, before Adam and Eve were driven out of Paradise, they had two sons. Cain and Abel. However Cain murdered Abel. Adam and Eve later had a third son and named him Seth. Seth went on to be the patriarch of modern mankind. Seth was believed to be the first Messiah.
In BRAWLZ: Return of the Messiah Seth appears during the Third Arc, after Kento Kawasaki was able to stop the Apocalypse. Seth warns the heroes that the man behind everything is his half brother, Cain. In BRAWLZ: Return of the Messiah, after Eve was seduced by the serpent she was led to Death, who came in the form of a man and slept with her. Eve bore a son to Death and he was named Cain. However Eve deserted Cain and left him in the wilderness and returned to Adam. Cain was raised by wild beasts, demons and Death, his father. When Cain was old enough, Death sent him to attack Paradise and he killed Abel. Cain was cursed by God with a mark that would make it impossible for him to be killed by mortals. With this curse Cain became like a wraith, appearing and disappearing mysteriously inciting evil as he was led by Death.
Seth was born years later, outside of Paradise. He spent his life's work tracking down Cain and thwarting his evil schemes. Seth claimed to have gathered enough intel to figure out that Cain was trying to resurrect his father, Death, as Kento had suspected. The heroes decide to follow Seth, who knows Cain's movements best and can track him down.
Once the heroes track Cain down, Seth engages into battle with him and defeats him. But as Seth is about to land a death blow, Adam knocks Seth out of the way. With the help of Eve who binds the rest of the heroes from interfering, Adam allows Cain to resurrect his father Death.
Adam does this because he knew Cain wanted revenge on Eve for abandoning him, and Adam also wanted revenge on both Cain and Death for killing his son Abel.
Adam and Death (who has merged with the body of Cain) engage in one final battle for the fate of the world. Adam forbids Eve from fighting Death and enters his Glorified form for the first time. However since Adam is no longer a god, his mortal body cannot sustain the glorified form, and entering it would kill him. Adam is prepared to sacrifice himself to destroy both Cain and Death to mend his error and save the world.
But going back to Seth (hence this is his drawing and should be about him). Seth was the first Messiah, still is the Messiah and is the most successful Messiah God has ever chosen (given the fact that he never died even once since he was born). But you may ask, if Seth was such a fab Messiah then wtf was he when all this terrible stuff went down on earth?
Good question. Seth was that good a Messiah God had to devote him to one task, watching Cain. You see as the son of Death, Cain was the linchpin of evil for mankind. But Cain was tricky, he would never strike directly (apart from the time he openly killed Kento, whom he believed was Seth, the person watching him) he would always incite and then equip a second party to do evil and then disappear. Seth would watch Cain and study his movements. Cain did not always remain on Earth, infact he seldom did after attacking Paradise. He raise sons named Cainanites to spread chaos on earth and would leave. Seth did the same and raised Messiahs while he would pursue Cain wherever he went.
Seth is the Alpha Messiah, which means he is the one God consults when it comes to chosing a new Messiah, training them and so on. And after a Messiah has finished office, Seth is responsible for assessing their performance and how devoted they were to their mission. Seth is also in possessions of all the Anointing (God's unlimited power) and is responsible for how much is given to each Messiah. If Seth deems a Messiah used his or her anointing well, he will add more. If a Messiah, like Takashi abuses his office, Seth will either take away the anointing from that Messiah or ask God to permit him to raise another Messiah to replace the corrupted Messiah.
Seths skills are oriented around covert pursuit, instantaneous travel and energy or aura sensing. Seth has the ability of opening wormholes for which he uses to chase Cain wherever he travels to keep an eye on him. Seth can watch the world from the safety of the inside of a wormhole. Seth's fighting style revolves around using wormholes of which he can create anywhere. For example when throwing a punch, Seth will send his fist through a wormhole and then open another wormhole in front of his foes face, no matter how far his enemy is from him, Seth will hit them.
Seth's other ability is Universal sensing. By tapping into synch with the Universe, Seth can feel the vibrations of all matter, plasma or energy, from spirits to mortals and identify them on different wave lengths. Using this ability Seth can locate anything anywhere and determine how far, and where his target is, how strong they are, their vitality, and their rate of any measurement of data needed to be studied. Seth is an incredible strategist. He seldom ever fights with brute power, he fights with wit. If a stick is enough to beat his foe, that is what Seth will use, despite having God's unlimited power at his disposal.
Seth's trump card is his exclusive access to God's Anointing or Unlimited power. Unlike other Messiahs who must make due with the level of Anointing God has given them, as the Alpha Messiah Seth has all access to God's Unlimited power. But Seth never, and I mean never uses it, lest he corrupts himself. However if the need so arises Seth will help himself to it for the sake of saving others, which is his primary objective as a Messiah. As the Alpha Messiah, Seth believes he must set the example for his juniors, like Kento and Takashi. If Seth is fighting a foe he cannot beat, he will not use the Anointing just to win a fight unless others will die.
Now though Kento Kawasaki has somehow merged his energy with the Universe' and has access to an unlimited power similar to the Anointing, the Universe's power is exponentially less powerful than God's Power. This makes Kento somewhere around the fourth or fifth most powerful character in BRAWLZ: Return of the Messiah after the likes of Adam (Glorified state), Death, Seth, Cain, Natashi/Natasha