Seike Taroumaru

Seike (清ヶ) is a character introduced in Toaru Kagaku no Accelerator. She is a powerful esper that can control the coefficient of friction and is a member of Scavenger.

Appearance
Out of all the members of Scavenger, she is the one who has the most normal clothes, wearing a simple seifuku or sailor school uniform and a short skirt. She has long black hair and a bored or tired look in her eyes. By the time of her debut in Toaru Kagaku no Railgun later in the timeline, she is shown as being bareful at all times.

On her tongue is a stylized tattoo or mark of skull with horns and chains, which is apparently the  symbol of Nakimoto Rizou.

Personality
She is much more low-key than the other girls, and as such doesn't speak much, befitting her bored appearance. Despite this, she can be still be quite mischievous as shown when she held out her tongue towards the DA operator of the Tarantula mecha and waved it, and even grinning and yawning when she stopped the machine.

Like all members of Scavenger, she does her job of killing people and destroying things without remorse or guilt, willing to eliminate those who get in the way. Moreover, she also hates teachers and believes them to be the source of evil in the city.

Toaru Kagaku no Accelerator
When Nakimoto Rizou realizes that DA has become a liability he contacts Scavenger's liaison to have them eliminate the group. The liaison wakes them up and announces to them via an intercom that they have a job to do.

They are later seen again razing the entirety of DA's headquarters in sector 3's warehouse district, apparently killing many people in the process. Despite this, some members of DA has still gotten away from them. Seike notes to the other members that that the place they destroyed is not the only target location. She comments that there is enough for everyone and asks if they saw the person carrying a bag big enough to carry a girl inside. They later track the surviving DA down using the Predator ability.

Scavenger later comes upon a small contingent of Anti-Skill. Seeing that they are in the way, they kill them as well, with Seike crushing a man's throat with her bare hands, as her group taunts the Anti-Skill still battling DA over the phone.

Scavenger later arrives at the height of Anti-Skill's battle with the remnants of the DA contingent that Scavenger hunted down. Her first move is to destroy one of the Tarantula mecha's String Juicer discs. After an opening salvo of explosive paper airplanes on the Anti-Skill and DA by one of her comrades, Seike and the Scavenger with the flu mask are the ones to face off against the Tarantula mecha. Much to the Tarantula operator's horror, after Seike holds out her tongue, he realizes that they are before the Nakimoto's "cleaners". Enraged, the DA operator of the mecha attacks them. Seike however simply uses her powers to prevent the mecha from moving, surprising the man. Seike hears and says that her power isn't Psychokinesis but the ability to control the coefficient of friction within a meter of herself. She states that the machine can't break a wall of air with the coefficient of friction set at max, and that any material that hit it will melt as the energy is converted to heat. After much urging from his comrade, the operator is forced to make a retreat away from them with his mecha.

As the Tarantula moves away, Scavenger's leader takes a large magnum from her backpack and proceeds to toss it to Seike, she looks hesitantly at the weapon for a second before realizing what she is being told to do, but in the end reluctantly agrees. After briefly complaining about how the use of the weapon hurts, something that falls upon the deaf ears of her teammates, she fires the weapon and launches herself at an incredible speed, catching up to the Tarantula almost instantly. She then reduces the ground's coefficient of friction to zero, causing the vehicle to spiral out of control. After Estelle Rosenthal and Hitokawa Hasami save the falling sister, she and the other members of Scavenger are shown standing on top of the Tarantula facing towards the duo.

Seike remains a spectator for Naru's fight with Yomikawa and Hasami, merely comforting Ya when their leader chastises her for not making sure to kill the Tarantula's pilot after freezing him with her coolant. Once Accelerator appears, Seike takes part in Scavenger's combination attack, being launched by Naru to remove the coefficient of friction around him so that he wouldn't be able to move. Like all the other Scavengers, Seike is terrified when Accelerator survives their attack and even more when they finally realize he's the #1 Level 5. Seike is the first Scavenger to be taken out by Accelerator, being slammed into the side of a truck and knocked out by Accelerator "playing" with her bioelectricity.

Abilities
Seike's ability is to control the coefficient of friction within a meter of herself, like Amime, though obviously in a much higher level. When setting the friction of air at maximum, even a 120 tons mecha is unable to move through the "wall". Apparently, any attempt to move through this wall where the coefficient of friction is at the maximum converts the energy of that attempt to heat. As such, if a bullet moves tries to move through the wall, it will only heat up and melt. Indeed, Seike boasts that any material on earth will melt first before passing through the wall.

Seike in conjunction with using a specialized magnum can turn all the kickback into thrust when she removes friction. This is enough to catch up to the Tarantula after moving a considerable distance away, though she hates using the magnum as using it apparently hurts.

Also, it is unknown how, but Seike can also break a grown man's neck with her bare hands.