*NOTE* these photos are my interpretation of the characters found on Google. I do not own these images.
Kayla
She won't get the Barcode Tattoo because she has a strong suspicion that there is something that is hidden in the tattoo where it stores all your information. She is curious, daring, and brave. She loves her mother and she is very caring for her when she is depressed because of her husband's(Kayla's dad's) death.
Amber
Amber is Kayla's best friend. She is very thoughtful. Amber persists that Kayla get the tattoo because of how "well" it did for her. She is nice, caring, and funny.
Mufumbe
He influences Kayla in most of her decisions. Incredibly handsome and wise. He is part of the Uncoded group.He fell in love with Kayla and they became a couple. Kayla soon discovered that Mufumbe was actually a part of the Code Gen which creates the barcode tattoo. He was going to convert Kayla to it so they could still be together. How could Kayla still love him after this?
Kayla's Mom
Kayla and her mom used to be really close up until her dad died. She started taking drugs from her work where she was a nurse. Soon she started getting drunk and got fired. Kayla had to take care of herself from then on and get a job. Kayla's mom attempted too burn off the tattoo and that resulted in a burned down house and death. She is insane, careless, and depressed.
Zekeal
Zekeal loves Kayla. He is part of the Uncoded Group and he is sweet, caring, thoughtful, and kind of adorable. Kayla eventually meets up with him again after she runs away. He becomes a big part in Kayla's life and they are somewhat dating.