Gotaru was a werewolf with light blue eyes and hair. He used to wear white robes.
Gotaru is sent along with Uzhir and two other warriors to hunt down Kentas who escaped after destroying the labs. He and his crew members corner Kentas shortly after he parts ways with M-21. When Kentas tells them that dozens of werewolves were sacrificed in the labs, to his horror, Uzhir casually remarks that he had expected a higher death toll. Kentas attacks them on learning that they had recently dispatched henchmen to gather more subjects. Uzhir confesses that he wanted to fight Kentas for a long time because of his sanctimonious ideals about the pride of their clan and fights him. Kentas is at a disadvantage because his body is far from its normal state. However, Gayare interferes and seeks Uzhir's permission to battle Kentas.
Uzhir is watching Gayare and Kentas fight. After Gayare makes light work of Kentas, Uzhir wonders how it could end so quickly and thinks that maybe Kentas' body wasn't in it's normal state. Gotaru asks if that's the case, then why didn't he just run away instead of destroying the lab. After finding out from Gayare that the destroying of the lab won't save the weaker members of their species and that they've been ordered to gather more for experimentation, Kentas pushes Gayare back and Gotaru is surprised to see Kentas still had that much strength left.
As Kentas and Gayare continue their fight, Gotaru, Uzhir and the other warriors watch. Uzhir is impressed by Kentas' resilience, whereas Gotaru dismisses Kentas, since he's a complete wreck, however, Uzhir remarks that he'd like to see Kentas' power, when he's in his normal state. After, Gayare defeats Kentas Ignes arrives at the scene with a badly injured M-21. M-21 tries to wake Kentas up, by reminding him of his duties and the promise he made to the clan members. Gotaru asks what he's mumbling about while Ignes quickly brutalises him into silence. Kentas staggers forth to attack her with an energy beam, which she blocks. Much to the shock of the werewolves and Ignes, Kentas is back on his feet.
When Gayare accuses Kentas of defending a human over his clan, Kentas mocks them and denounces they're no longer fit to be called members of their clan. The surrounding warriors are amused, Gotaru questions what Kentas is saying, with one of them wondering if Kentas is in his right mind. Gayare releases his aura and transforms further, he launches an attack against Kentas, with the intention of killing him, regardless of Maduke's orders. Kentas blocks Gayare's attack. Gotaru is surprised and wonders how Kentas can still have so much strength left, going as far as blocking Gayare's attack with one arm, when his body isn't even in it's normal state. Kentas and Gayare continue their fight, matching each other blow for blow. Gotaru comments that he didn't know Kentas was that strong, and Kentas didn't even accept the new power.
Uzhir and Gotaru are watching the battle wear on between Kentas and Gayare. Uzhir remarks that Gayare is becoming increasingly flustered at the situation. Gotaru responds that it'd be even stranger if he were calm, and that he's flustered, just watching the battle and can't imagine what it must be like for Gayare. When Gayare stabs Kentas through the stomach, Uzhir believes the battle is over, ending in Gayare's favour. However, he and the other werewolves are shocked to see Kentas defeat Gayare. Gotaru wonders how it's possible for Gayare to lose, while Kentas stands before the spectators and asks whichever one of them is next, to step forward.
Kentas is exhausted and having fought Uzhir insists on continuing. Uzhir asks him if he's out of his mind. Kentas gets to his feet and replies that he doesn't think he can beat him, and that he's fighting to the end as a warrior for his people, who were betrayed by the Lord and the warriors they trusted to protect them. Gotaru shouts to Uzhir asking how long he's going to listen to Kentas spout such nonsense and if he doesn’t want to finish off Kentas, tell him and he'll do it. Before Uzhir can respond a voice asks them what's wrong, and whether it's hard for them to hear what Kentas is saying because they feel guilty. The warriors are left in shock as Muzaka and Raizel make their appearance.
Gotaru and the other warriors remark that their Lord predicted Lunark would bring Muzaka to their territory, and that they both wandered in, without knowing that all the warriors were waiting for their arrival. Muzaka asks Kentas about M-21's location. Kentas wonders if he's talking about M-21, and whether the Noblesse has come to rescue M-21. Kentas tells them that he was captured by a Noble named Ignes, while they were making their escape, and he was taken back to the lab. Raizel is shocked by the revelation and asks for confirmation, which he gets from Kentas. Kentas tells him they destroyed several research facilities near the lab, where M-21 has been taken, so he just needs to head for a place with smoke coming from it. Muzaka instructs Raizel to go on ahead. Just as Raizel is about to leave, Gotaru stands in his way, stating that Raizel isn't going anywhere. Gotaru comments that he doesn't know who Raizel is, but it's not up to him to decide whether he gets to leave this place or not. Raizel asks him to step aside. Gotaru refuses, asking if he's stupid and whether he thinks that he'll step aside, just because Raizel asks him to. Muzaka suggests that Gotaru let Raizel be on his way. Gotaru shouts for Muzaka to shut up and refuses to take orders from a traitor. Muzaka tells him it's advice not an order, but he can think whatever he wants, before adding that he shouldn't let himself get distracted when he has an opponent like Raizel in front of him. Gotaru questions what he's murmuring about, when he's suddenly hit with a powerful energy. Gotaru is shocked and scared as Raizel releases his aura. The other werewolves are shocked at the level of Raizel's power, as the ground begins to shake. Gotaru is pushed back by the resulting explosion. Muzaka wonders why Raizel is forcing himself to use his powers to such an extent. Gotaru is left sitting on the ground coughing and spluttering.
Gotaru is still reeling from Raizel's attack. Muzaka tells the warriors that he would like to go on a rampage, but he has something he'd like to ask them first. Uzhir wonders what he could possibly want to ask them. Muzaka asks if it's true the Maduke has been sacrificing their people to increase his power and whether they and the other 'so-called warriors' are going along with it. The blue-faced werewolf laughs, before enquiring when Muzaka last set foot in their territory, since betraying them, and asks if that's all he has to say after returning to their homeland for the first time in centuries. Uzhir states that if he truly wishes for an answer then he'll tell him, and confirms Muzaka's suspicions, adding it's how they made their people stronger. The blue-faced wolf wonders why Muzaka came to their land, and whether it was just to ask that, before adding that it seems like the traitor still considers himself a Lord. Muzaka is angered by the blue-faced wolf's dismissal, before shouting back, they have no problem with using their own people to gain power, and if that's the way a Lord and his warriors should behave. Kentas is surprised by Muzaka's outburst. Uzhir retorts that it seems any further conversations with him will be meaningless, and tells him that he's mistaken about something. He's no longer their Lord, but a traitor who abandoned them long ago. Suddenly, the blue-faced werewolf attacks Muzaka from behind, declaring that he's just their prey. Muzaka grits his teeth and transforms. He turns and attacks the blue-faced werewolf, pushing him back. Kentas and the other warriors are shocked to see this. The blue-faced werewolf is injured, as Muzaka follows up his attack by slashing at him, thus pushing back even further, before he can finish off the blue-faced werewolf, Muzaka senses something from behind, and blocks a punch from the green-haired werewolf. The green-haired wolf glares at Muzaka, just as Muzaka grabs him and swings him round by the wrist, before knocking him into the ground. Muzaka then stomps on the green-haired werewolves' stomach burying him even further. Muzaka senses something and is unable to avoid an attack by Uzhir. The blow pushes him back. Muzaka steadies himself and faces the three warriors, who in turn have gathered themselves and glare back at the former werewolf Lord. Kentas is worried by the turn of events, as he's still to injured to help. Muzaka tells the werewolves they're right, and there's no need for them to continue talking.
Muzaka transforms into combat mode. Kentas is surprised to see Muzaka's true form. The blue-faced werewolf thinks this is bad. Uzhir comments that Muzaka may have been the one who led them, but he'll show him how different things are now and clenches his fists. Uzhir, the green-haired werewolf and the blue-faced werewolf transform a second time. Muzaka questions whether their second transformation and the increase in power is due to the new power they've obtained. Uzhir confirms Muzaka's suspicions, adding that this is the power the Maduke and the warriors have achieved so far. Uzhir continues that he didn't think all of them would need to fight him together, but after seeing his power, it looks like they have no other choice. Uzhir begins the attack, telling Muzaka not to resent them for the measures they have to take. Uzhir launches a punch against Muzaka, which Muzaka blocks easily. Uzhir attempts to use his free hand to launch a second punch and manages to push Muzaka back. Uzhir launches punch after punch against Muzaka, and Muzaka blocks all of them while being pushed back. Gotaru who is watching the battle from the sidelines, excitedly supports his team. Gotaru yells for them to keep charging at Muzaka and since Muzaka's a remnant of the past, getting rid of him will be easy for them now. Muzaka having had enough of being pushed back, regains his composure and slashes at Uzhir. Muzaka follows up the attack with a more powerful slash, dealing severe injuries to Uzhir in the process. While Muzaka is focused on Uzhir and pushing him back, the green-haired werewolf attacks Muzaka from behind. Muzaka senses the attack, and blocks it breaking the green-haired werewolf's hand. The blue-faced werewolf attacks Muzaka from behind and manages to land a blow against Muzaka. Muzaka regains his balance quickly, turns around and rushes towards the blue-faced werewolf, slashing him across the face, causing him to cry out in pain, holding his face. Muzaka then punches him in the stomach, sending him flying. Uzhir uses the opportunity to attack Muzaka from behind and manages to land his attack, sending Muzaka flying. Kentas cries out worried for Muzaka, as Muzaka manages to stop himself. No sooner than Muzaka stops himself, the green-haired werewolf launches a head on attack against Muzaka. Muzaka gathers his strength and severs the green-haired werewolf's left arm at the elbow. Muzaka then launches a follow up attack on the blue-faced werewolf, killing him instantly. The green-haired werewolf is worried and begins to sweat. Muzaka slams him to the ground, smashing his face in the process. Muzaka then picks up the green-haired werewolf like a rag doll and is about to finish him off when Uzhir intervenes. Uzhir fires an energy beam at Muzaka, which hits him in the back. Muzaka is thrown forward, still holding the green-haired werewolf. Uzhir attacks Muzaka from behind, however Muzaka throws the green-haired werewolf at Uzhir who catches his comrade. Uzhir is angry, however, he doesn't have any time to react since Muzaka unleashes a powerful slash attack against him and the green-haired werewolf. The blast hits both werewolves with Gotaru and Kentas shielding themselves from the blast of the impact. Muzaka is worn out, as Uzhir sinks to his knees, his body injured and in ruins. The green-haired werewolf has been wiped out of existence. Muzaka notices their lack of strength and asks if they're really warriors. Muzaka tells Uzhir that aside from him, the other warriors were nothing more than trash, unworthy of their titles. Gotaru is shocked by what he's witnessed and wonders what happened, since their Lord said they'd be more than capable of capturing Muzaka on their own. Gotaru staggers back out of fear. Kentas too, is awestruck by the power of their former Lord. Muzaka bitterly questions Uzhir, if this is all he got in return for sacrificing their own people.
Seeing Uzhir defeated at Muzaka's hands, Gotaru wonders how their former Lord became so strong and that he'd better leave before he ends up the same way. Gotaru flees the scene intending to inform Maduke about the situation.