OVER's main attack style is the usage of an immense pair of scissors in conjunction with his main fist attack style of Gokuaku Zanketsu Shinken. (極悪斬血真拳 Fist of Horrible Bloody Murder, dub: Fist of the Ultimately Evil Sword). The main attack ability of this style is slashing an opponent with the scissors like a sword to cause as much pain and damage as possible. (in the anime, this was changed to the summoning of a purple energy ball on the scissors which he aims to hit his opponent) Similarly, he can also summon more scissors when he drops one pair, usually to throw at an opponent like a projectile.
As brutal as his main techniques are, OVER does not just attack with his battle ability, but also with the ability to kill an opponent from the inside out. If he (or his alter ego) attacks an opponent in a certain way, a special "Kill Seal" (dub: Death Mark) is placed on them, similar in formation to OVER's own symbol. Anyone with this mark on their body will slowly have their power drained by it, weakening them to the point of their own death. The power of the Kill Seal is so powerful that the only way to stop it is to defeat OVER, removing it from all afflicted. It is revealed that OVER is 25 yrs old, which for some reason is three years younger than Torpedo Girl.
A very serious indivual, Over is very loyal to the Empire's goals and will rip out hair; and gladly kill anyone who rebels against this cause. He is usually emotionless in battle except for an insane grin and violent anger that slowly reaches the point of exploding. Over is very sadistic, so he uses a large pair of scissors that he licked once before fighting Bobobo(or more if he wished) have a field of cannons and bear traps (originally knives in manga) or use a life draining mark just to please himself in bringing pain onto others. Even being the embodient of pain in the Empire, he has a hatred of Jelly Jiggler since he struck him first. In fact he is so dangerous, Bobobo and friends try to make him calm as possible. He is so ruthless that uses Suzu, Don Patch and Jelly Jiggler as hostages because he couldn't comprend why he was saved after his defeat. During the fight with Czar Baldy Bald the Third , he makes a truce with Bobobo and company to help defeat the ancient emperor. He is calmer after this, but still doesn't like Jelly Jiggler (though attacked Don Patch and Bobobo once) and this continues at the end of the series.
Torpedo Girl (魚雷ガール Gyorai Gāru) is a powerful, unpredictable force not even Bo-bobo and his Wiggins quite understand when she first appears. Compared to her "other half" OVER, she is a living female torpedo with human arms and legs. Furthermore, compared to the patient anger held by the human form, she gets annoyed by even the slightest of comments, immediately responding by making her bomb-like body fly towards her opponent and smashing into them with intense force. Even if she explodes, she will reassemble instantly. Unlike Over, she is actually 28 years old. It is unknown why she is 28 and Over is three years younger. This form is probably the reason why OVER is much stronger then Gunkan and didn't become an insignificant Heavenly King like Kitty Poo.
Although Torpedo Girl consistently holds an angry grudge to nearly everyone she meets, she does have a more affectionate side to her personality. Although she initially holds hatred for the silliness of Bo-bobo, Don Patch and Jelly Jiggler, she comes to see them merely as "children" who just needs her guidance like a teacher guides their students. In certain battles where she sees them in danger, she fights to protect them from their opponent. Similarly she can assist in awakening the hidden potential of other warriors. During Bo-bobo's battle with his brother Bebebe-be Be-bebe, she is able to awaken a hidden "Ganeme" attack inside the afro warrior. After the first series, she further assists Bo-bobo in evolving his "Hanage Shinken" into its "Shinsetsu" version and continues to watch over the development of the other rebels in their further battle against Hair Hunters.
Another side to Torpedo Girl is her romantic side, bringing out a feminine part of her not normally seen in her. Initially she had been in love with Hatenko, but when he had betrayed her, she placed a "Kill Seal" on him and threw him out into the wilderness. (where, ironically, he would meet the Wiggin Gang and Don Patch...and have the same Kill Seal used against him by OVER) Yet when she meets Softon when encountering Bo-bobo's team on their way to Cyber City, she instantly falls heads over heels for him, making her obsessively pursue him and declare her love of him every time he's around. Surprisingly, while Torpedo Girl loves Softon with his strange head, she becomes heartbroken when she sees his true, human face after Icen steals away his Babylon abilities.
Torpedo Girl's main attack ability is simply the usage of her body to fly around and bash into an opponent. Due to the force of acceleration and the weight of her body, she is able to make a powerful attack just by herself. Her body is invincible in this form and can not be penetrated by any attacks, including Fist abilities. Torpedo Girl's more powerful attacks are all classified as the Fist style of Gokuaku Zanketsu Shinken (the same "Fist of Horrible Bloody Murder" as OVER, but made as a separate "Fist of Torpedo" in the dub instead of "Fist of the Ultimately Evil Sword" like her human half), which usually involve the release of many torpedoes that bombard an opponent into an attack they can not escape from. (This attack is not used in the anime} While she often doesn't use them, Torpedo Girl also occasionally uses Wiggin abilities just like Bo-bobo.
Although turning OVER into Torpedo Girl is easy, turning her back into OVER is much more difficult to determine. In her first battle against Bo-bobo's team, the torpedo female slowly started to wear down from the long, drawn out battle with the Wiggins. Eventually, Torpedo Girl began losing her own stubborn personality and begins to speak and act more like OVER before one more super-powerful attack turned her back to the human form. However, the only other depicted time Torpedo Girl had been seen turning back was during the battle against Czar Baldy-Bald the Third. Without any forewarning on her part, she merely loses energy and faints, leading her to turn back into OVER. Because Torpedo Girl had not been pushed to her physical and mental limit when facing the Third, it is assumed that the anger energy stored within her had run out, forcing her to change back to her other form. Though Torpedo Girl is the daughter of Landmine Dandy, it is never explained if she or OVER were the original being or two separate beings that became merged.
Everything after Torpedo Girl killed her father is a complete unknown in her history. What is known is that somehow she became a member of the legendary "Joke Killer" group, which was natural due to already holding a grudge to Wiggins due to her father. It is also assumed at this time that OVER first appeared, becoming well known in his own right as a powerful member of the Hair Hunt troop to the point of eventually becoming one of Baldy-Bald the Fourth's Four Heavenly Kings.
As the Wiggin squad arrived at the top of OVER's castle, the silver-haired warrior was finally challenged, choosing to face them in a special battle arena, Calamity Canyon, where they were one cannon-blast away from either being slashed or thrown down onto a field of knives(bear traps in the anime). Bobobo, alongside Don Patch and Jelly Jiggler (who for some reason became the main target of OVER's attacks and anger) faced him in battle, consistently trying to find a way to either knock him or his scissors away while avoiding the consequences of a mid-air battle. After finally breaking through his sanity defenses with a Wiggin attack, OVER finally reveals the anger energy storing inside him preparing him to return to his true form...which Jelly and Bo-bobo immediately complete. His anger power energized, OVER finally reveals his true form...Torpedo Girl!
In his/her/its true form, Torpedo Girl immediately gets to work, instantly showing off her unstoppable "Joke Killer" powers against Bo-bobo's team and her invincibility to practically all of their attacks. The Wiggin Trio get to work throwing out their attacks, both alone and a team, but the torpedo merely laughs it off and continues to attack them ruthlessly without remorse. Even a trip into Bo-bobo World was not enough to take her down. Eventually, Bo-bobo was forced to unleash one of his most powerful attacks: the judgement of the Nine Planets that slowly wore away at her (and his teammates), making her OVER personality return before finally forcing her to face the ultimate wrath. Although the attack was enough to defeat Torpedo Girl and turn her back to OVER, a logistical gape in Bo-bobo's team rescue forced them to fight the madman one more time before a powerful Fist of the Nosehair attack finished him off once and for all.
Torpedo Girl made an even more unexpected return during the Wiggins battle against the Former Maruhage Empire. Combat Blues (Major Minor), a perverted military man who leads Former E-Block, ends up accidentally summoning her believing that she was his secret weapon against Bo-bobo! Taking advantage of her caring nature, Bo-bobo coaxes Torpedo Girl to crush Combat Blues, making quick work of the leader. The torpedo remains in the area for the remainder of the arc, fighting off minor block leaders while going back and forth running off with various members of Bo-bobo's team at the wrong times. But when she returns to the main team to assist in the battle against Czar Baldy-Bald the Third,She goes crazy and goes back to OVER.Stuck with the possibility of facing two madmen, Bo-bobo somehow allows OVER to fight against the Third...while at the same time watching out from being slashed by any attacks meant for him (or Jelly). After the former Czar was finally stopped, OVER left them behind to return to his own missions.
Inside the Yamiking, OVER soon found himself facing off against LOVE once again, joining a Sangaria with Don Patch and Hatenko to get revenge on the female that had defeated him before. Unfortunately, he instantly found himself at a disadvantage against his opponent, consistently attacked by her "Oiroke Yamiken" (Dark Fist of Sexy) abilities that wore down his tolerance and his abilities as she kept trying to make him go into her "muscle building" machines. Eventually, LOVE's actions were able to make one of his anger balls light up, which was of slight worry to the rest of the team...until Jelly Jiggler's words of confidence unexpectically anger him to activate the other five! With OVER turned back into Torpedo Girl again, she became immune to LOVE's flirtation attacks and, with the assistance of her frustrated former crush Hatenko, make quick work of the Dark Kingdom warrior.
The return of Torpedo Girl end up making Bo-bobo's battle against Hydrate slightly easier. Although she did not directly fight against any more enemies, she assisted Bo-bobo when needed for an extra attack. However, her main importance was the activation of the hidden potential within the afro warrior. During a losing battle against his brother Bebebe-be Be-bebe, Torpedo Girl (with Don Patch and Jelly) sneaks inside Bo-bobo's mind, where they play with his controls to the point of activating his "Ganeme" attack, which ends up crushing his older brother.
After the fall of Hydrate, Torpedo Girl decides to come along as Bo-bobo's team heads to the Hair Kingdom to take down another of his brothers: Bibibi-bi Bi-bibi. Though she does not do as much as other members of Bo-bobo's team, she did her part in taking down the forces of the Hair Kingdom. She fought an initial battle against fan-created general Hell Dolphin before assisting Bo-bobo's team in taking down Icen and the remainder of her team. (particularly after what she pulled on Softon) She then was thought to become a hostage in the battle of MechaShigekiTower Survival, as the main hostage of a tofu cube puzzle game. Yet somehow she was still able to throw out an occasional attack against the enemies inside the tower who disturbed her. (including Hatenko) She even got a fusion with Bo-bobo that was instantly crushed by Bo-bobo's older brother! In the end, she helped in finally defeating the tyrant before going off on her own way again with the end of another threat.