Peko has long, silver hair that she ties up into two braids on each side of her head. Her eyes are also bright red and are framed by rectangular glasses. She is constantly seen carrying her shinai (bamboo sword) around with her in a dark turquoise sheath on her back.
Peko comes off as a very serious and stern woman who shows little emotions. She speaks with an authoritative tone of voice, and she is mostly business. But she doesn't hate the company of others, and one of the reasons why she always seems to be so unemotional is because of how she was raised.
Peko is amazingly skilled with a sword and is very agile and lithe. She is one of the most elite swords-women in the dimension, and can take down many foes twice her size. Usually, in very basic combat, Peko may opt to use her bamboo sword instead of her katana when she would rather not injure her challengers.