Aka Williams

Aka Williams (아카 윌리암스, Aka Williamseu) is the leader of a group of Regulars who are getting on the Hell Express. His subordinates call him "Sir Aka" most likely out of respect and/or fear of the man. He was previously on board the train with his allies and participated in the Dallar Show as part of Jyu Viole Grace's team. However his main focus was stopping Hoaqin.

History
Aka had previously rode the Hell Express and at the time Boro, Daniel Hatchid, Sachi and Roen were his teammates. However after a certain "event" occurred the two took separate paths and while Boro hid out, Aka looked for ways back on the train so he could find "her" again. The event in question occurred during this first boarding of the Hell Express, were he encountered an unknown Slayer candidate that gradually killed everyone on the Hell Express until, in the end, only him and his teammates survived. However after Roen ended up dying, he and the others forfeited the train.

Appearance and Personality
Aka is extremely large, being more than twice as tall and many times wider than an average Regular. He wears a large, thick coat with many pockets. He has dull yellow hair and full lips, probably covered in red lipstick. He is facially androgynous.

Boro said that he is greedy and that he should be watched out for. In his interactions with Ran, he acts very superior, dismissing his challenger as an insignificant newbie without even observing his ability. However he is insightful to a degree as he noted that Ha Yura was hiding something.

Even though he hates Boro, he still retained some of protectiveness for his former comrade as he shielded him from Anna's jar of souls, likely from lingering bond as a team.

Revolution Road
Aka was first seen being scouted by Edin Dan who commented on his large size. Later on, when Ran challenged him for his Ticket, Aka casually dismissed him and told his subordinate, Moontari, to put the Koon Family Regular in his place.

When the tournament was discovered to be a trap set by Ha Yura and her allies Aka was one of the Regulars that came down to see what was happening. After 'inspecting' Yura's suitcase, he and the other Regulars discussed on how to reach Yura before she and her allies made off with the Hell Train. Noting that there was an emergency exit with an unnavigable maze, Hwa Ryun appeared and told them all that she would guide them through it.

He, Boro, Moontari, Ran and Baam race through the emergency exit maze, led by Hwa Ryun. Eventually they make it out of the maze, thanks to Hwa Ryun's abilities as a Guide but are stopped by the problem of the elevator being damaged. However Baam comes up with a solution and the Regulars move down the elevator's pathway in order to get to the Entrance floor quicker. When the get to the bottom, he punches the door through and the group sees Ha Yura and her teammate getting away. They all give chase and, as they are about to catch her, Mirotic suddenly reappears and viciously attacks them all. He then watched as Baam managed to find a way past the gatekeeper using Hwa Ryun's power as a Guide and then threw Boro after them. Aka, Moontari and Ran then continued to withstand Mirotic's attacks as the gatekeeper went on the offensive. Ran put forward the idea to counter-attack Mirotic and Aka decided to put the plan into action. Activating "Combustion", Aka confirmed that if Ran could deliver critical damage, they could unsettle the gatekeeper. Mirotic then fired another spear at them and Aka stopped it with his powers; another spear quickly followed and, after Aka prompted him, Moontari stopped it allowing Ran to strike with one of his Lightning Spears. However, to his dismay, the attack failed to work and Ran was struck down by the 'real' Mirotic.

Aka and Moontari continued to struggle against Mirotic until suddenly Beta appeared and landed a successful blow on the gatekeeper. However the advantage didn't last until Beta's 'allies' arrived and helped them all to take out Mirotic. Aka and the others then travelled down the pathway until they caught up to Baam and Boro. Aka is then shocked to see Daniel and audibly wonders how he was still alive, having apparently died centuries ago. Daniel chastised him, and Boro, and proceeded to destroy the stairs with a powerful attack, leaving them with no way to follow.

Aka eventually reached the platform, just after the Train was departing, and introduced himself to Koon. Koon asked him what his relationship with Daniel was and Aka informed him of his past before saying that they needed to catch up to the Train by any means possible. After some discussion, Koon told them that they should head back to the stadium and sort everything out down there first.

Wooden Horse
A little after 10:30PM, Aka arrived along with an old partner who stated the train had arrived at the Wooden Horse.

At the 'Altar' Aka, Boro and Sachi witnessed Hoaqin coming out of the train with Boro noting that he looked smaller than last time. Aka then watched in dismay as Hoaqin effortlessly decimated a large amount of the Regulars at the station.

Later, with only 10 minutes left to board the train, Aka and company raced towards the stairs of the train but caught the attention of Hoaqin on the way. With freak lightning interrupting Hoaqin's assault, Baam, Koon and Rak swiftly arrived on the stairs leading into the train. A brief scuffle broke out between the two sides but it was interrupted when they were all teleported to the train conductor's office. The conductor introduced himself and then informed them about a game that would decide who would become the Slayer candidate in a month's time. At that, he teleported them away to different locations in the train.

A Month
Their group immediately encountered the guardian Yokim and they planned on taking him down until Hwa Ryun suggested that from that point onwards, Baam was to take all tests by himself in order to prepare for challenging Hoaqin. Aka then watched as Baam took on Yokim and eventually defeated Yokim, enabling them to pass the stage.

During their traversing of the train's pathways, the group eventually encountered the "god" of guardians. Despite Boro and Sachi suggesting to turn back due to the guardian's fearsome reputation and power, Baam decided to stay and challenge the "god" of guardians. The guardian snatched Baam up and took him away. Aka and the others then waited for three weeks for Baam to return.

Eventually Baam hurriedly returned and the group narrowly made it to the 4th stage in time.

The Dallar Show
Aka and the others listened to the rules of the Dallar Show and then watched as Koon coolly won the first round. During the second round game, "Transferring the sweetfish", Aka was partnered with Boro and Sachi. As they navigated the surprisingly treacherous pipes, the three of them determined that stopping Hoaqin was more important than winning the round. To that end, three encountered Hoaqin and his sibling, Anna, with the latter coming down to face them. Anna fought them, using her Soul Jar to pour a special soul-melting juice over Boro, but Aka stepped in to protect him at the cost of injury. Aka's subordinates them came along to aid him but before they could do anything against Anna, she was absorbed back into Hoaqin above. With everyone going up, they saw Hoaqin had retained his previous form, much to their horror. Hoaqin then impaled Daniel and gave the three an ultimatum: sacrifice themselves to save Daniel's life. They refused when, at that moment, Jyu Viole Grace arrived and engaged Hoaqin. With all of them deciding to lend their aid, Aka moved to immobilise Hoaqin, getting himself impaled in the process, but allowing Viole enough time to stab Hoaqin in the heart with the White Heavenly Mirror. However, their plan amounted to nothing and the second round ended.

In the third round, a severely injured Aka watched as Viole went on to win the Dallar Show. He conversed with Daniel about their past, but the latter merely gave him a forgiving response. With the Dallar Show over, boiling acid started to pour into the arena, but they all managed to escape thanks to the timely arrival of Ha Yuri Zahard and Evan Edrok.

Yuri Jahad
With the others making plans to head to the 43rd Floor, Aka, his subordinates and Daniel revealed that they would be getting off at the next station due to their injuries.

Powers and Abilities
He is likely a powerful Regular, being the leader of a group of Regulars who are getting on the Train and wanting to scout powerful Regulars such as Baam. His large size doubtless makes him tricky to take down. He is physically powerful enough to punch through the doors to the Entrance floor. According to SIU Aka may look somewhat under-powered, but in a 1-on-1 fight, Aka should be stronger than Beta or Ran (in theory).

Combustion: It is Aka's shinsoo control technique that apparently gives him the 'ultimate defence'. By enclosing himself with shinsoo that is at a deadly high temperature, Aka can dispel all attacks from an opponent that attempt to strike him. Aka was able to stop and hold one of Mirotic's spears while this technique was activated.

Quotes

 * (Talking about Ran to Moontari) "It seems that kid is from the Khun family. To those newbies who use their family's power to act up. It would be best for you to put him in his place."

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Aka Williams