Berserk is considered to be one of the best manga of all time. The series is filled with incredibly detailed art, and it has a captivating story. The combination of these two things makes Berserk an extremely worthwhile read. The manga went on hiatus after the passing of its creator, Kentaro Miura.
However, Kouji Mori, one of Miura's friends decided to bring the story to its meaningful end. This means that a lot of the mysteries surrounding the characters would finally be revealed. There are numerous characters in the series, whose abilities have not been shown, but the fans will hope to see these characters use their powers to the fullest.
7 Guts
Guts is the main character of the series, and he is among the most powerful fighters. Guts is an expert swordsman, who has practiced with his sword for hundreds of hours. His training has helped him to beat numerous strong fighters.
After losing his left arm, Guts attached a fake arm, which also serves as a cannon. Guts' biggest source of power is the Berserker Armor, which turns him into a freakishly strong monster, but the armor comes with its drawbacks, so he cannot use it for long periods of time. Guts definitely needs to get stronger if he wants to have a shot at defeating Griffith, so it is possible that Guts has some kind of unknown power that he is yet to tap into.
6 Moonlight Boy
The Moonlight Boy is a big enigma, and there are a lot of things about him that remain unknown. The Moonlight Boy looks like an ordinary human, with no standout characteristics, but according to Schierke, his body is different from other humans.
The Moonlight Boy also seems to have some control over astral creatures. He can also appear inside Guts' consciousness and free him from the grasp of the Berserker Armor. On another occasion, the Moonlight Boy helped Guts to get out of the dying Sea God. Clearly, the Moonlight Boy is important to the story, and it seems that he is blessed with special powers.
5 Skull Knight
The Skull Knight is the sworn enemy of the God Hand and apostles, and he has been fighting them for ages. The Skull Knight holds a great deal of power, and so far he hasn't suffered from any major problems against his opponents.
His past remains shrouded in mystery, and there is very little information available about him. The true extent of Skull Knight's power remains unknown, but given his rivalry with Zodd and the God Hand, he unquestionably has a great deal of power.
4 God Hand
The God Hand is undoubtedly the strongest group in the entire series. Before the eclipse, there were four members of the God Hand — Void, Slan, Ubik, and Conrad. All four of them wield extraordinary powers, and no ordinary human is capable of causing them any kind of harm.
They have the power to turn others into apostles and because of this reason, the apostles fear them. Each member of the God Hand seems to have a unique power, but there have not been many instances where they have received an opportunity to show it off.
3 Zodd
Zodd is a strong apostle, who appeared before Guts during the Golden Age arc. When Zodd confronted Guts, the latter was awestruck because of Zodd's power. He achieved fame after he killed tons of people in different wars. Zodd roamed from battlefield to battlefield in order to satisfy his thirst for war.
In his fight against Guts, Zodd thought he would be the victor without any problems, but Guts managed to block his attacks with his huge sword. Zodd has also fought against the Skull Knight, which shows that he is not an ordinary apostle. Zodd hasn't gone all out in a fight so far, and when he does, it would give a better understanding of his power.
2 Locus
Locus has been labeled a legendary figure, and when he was alive, his exploits made him renowned throughout the world. After being reborn as an apostle, Locus' physical attributes increased by many folds, however, unlike most apostles Locus is well-mannered and calm. Due to his personality, Griffith appointed Locus as his auxiliary in politics.
Locus' record as a fighter is almost immaculate and he remained undefeated until his death. His weapon of choice is the lance and needless to say, he can use it masterfully. While Locus' past definitely makes him an interesting character, his current power level is difficult to calculate, and it is mainly due to his lack of screentime.
1 Flower Storm Monarch
She is the ruler of Elfhelm, which is located on Skellig. Her magical power is considered to be unparalleled, which earned her a great deal of fame. The Flower Storm Monarch is mainly calm and collected, and she doesn't engage in fights needlessly.
The Flower Storm Monarch is considered to have the ability to fix the minds of people, who have suffered a great deal of trauma, and this was pointed out by the Skull Knight. Being the ruler of the Elfhelm, there is no doubt that she is among the strongest characters in the series, but she has not exhibited her full power yet.