Zenko

Zenko (ゼンコ, Zenko) is Metal Bat's little sister.

Appearance
Zenko takes on the appearance of a young child with similar facial features to her older brother. She wears a light colored cardigan and frock. She wears black flats and white high socks with frills. She keeps her hair around chin-length and wears a flower clip.

Personality
Zenko is just as headstrong as her brother, but dislikes violence. She is caring and very protective of her brother. In addition, she is quite fearless as she was willing to go into an evacuated city during a monster crisis and was unafraid to stand up to Garou.

Like her brother, she's very hot-headed, to the point of keeping arguing with Garou despite getting both her and her brother's lives threatened by Garou.

Alien Conquerors Arc
Zenko has a piano recital during the alien invasion. She later calls Metal Bat, when he is arguing with Sweet Mask. She also asks for Sweet Mask's autograph.

Hero Hunt Arc
She calls her brother to ask for help to carry her shopping bags, but Metal Bat declines because he is too busy. This causes her to cry and hang up.

Centipede Arc
When Metal Bat is about to hit Garou, she shouts, "Big Brother!". Noticing that his sister is here, he stops his swing centimeters away from Garou's face. Garou takes this opportunity to punch Metal Bat and before the two could clash again, Zenko jumps right in front of Metal Bat. She then starts to shout at Garou about her promises with Metal Bat and despite getting her life threatened by Garou so that he can continue his fighting, she keeps her stand. Garou accepts her persistence to leave her and Metal Bat alone.

Physical Abilities
Enhanced Speed & Reflexes: Zenko is surprisingly fast, she was able to intervene between Garou and Metal Bat before they were able to clash again.

Trivia

 * She is known to be able to play piano.
 * Zenko shares a similar character design to her brother. Specially the eyes and hair.
 * Zenko (ゼンコ, Zenko) means expressive, diplomatic, and refined nature, which can be when she tries to negotiate a resolution with Garou.