A 31-year-old male character wearing a red fedora, a hooded jumper over a white shirt and tie, black trousers, and red sneakers. He has a strong mentality and is a total otaku. Standing in his 170s (cm), he is quite handsome but has the vibe of a friendly neighborhood uncle. He carries a book titled '100 Things to Do Before Becoming a Parasite' (P100 for short) and is actually carrying out the tasks written inside. He wears glasses. He actually enjoys the parasite outbreak, primarily because he doesn't have to go to work anymore. His physical abilities and appearance are average, and he has no particularly special strengths, but unlike Tongkkangie who struggles just to survive, he has a positive mindset, seeing this disaster as an opportunity to do whatever he wants freely. As soon as the outbreak began, he achieved his first goal, 'Riding a Cool Motorcycle,' and still owns it.

Real name Dello-ryak-guk. A male wearing a white tracksuit with black stripes and a black T-shirt underneath. He wears a helmet that resembles a gauntlet, which hides a face that looks like a neighborhood older brother with neat hair and glasses. He is a close friend of Waldokun and a survivor barely scraping by in the parasite outbreak. Although he is a coward, he is the type to risk danger and charge ahead for his friends. Following Waldokun's lead, he achieved his first goal, 'Driving a Camper Van.'

Just call her Nae-haet. She is an editor at the company Waldokun works for. She is a woman with long black hair flowing down the sides and braided in the back, wearing a white T-shirt with a Monster Energy logo, dolphin shorts, and a large black hooded jacket. She wears crooked glasses, has turquoise eyes, tired-looking eyes, and a pair of small black horns on her head. She is already infected with a parasite, but for some reason, drinking one can of Monster Energy drink allows her to remain human for up to 3 hours. However, staying human takes a lot of physical energy, so she is always staggering. If she doesn't drink Monster for 12 hours, the parasite will take over. Because she's always stumbling, Waldokun gave her a wrench for self-defense. Following Waldokun's P100, she immediately achieved the goal of 'Drinking over 10 cans of Monster in a day.' She filled the fridge in Dello's camper van with Monster Energy drinks.

No matter how you look at it, from any angle, this person has the physique and appearance of a woman, but the actual gender is **male**. He has silver short hair with a ponytail in the back, and wears a white sleeveless top, a hooded jumper that is yellow on the inside and black fur on the outside, very short denim shorts, and a bell choker. He has golden eyes and usually tries to act cool, but once his emotions explode, they linger for a long time. He tries to appear cool to people he meets for the first time, but he's the opposite with close friends. His basic physical abilities are higher than others. He looks at Waldokun's P100 with disdain, but he often finds himself wanting to do it too and secretly likes it.

Waldokun's younger sister. Overall, she wears the same red fedora and hooded jumper as Waldokun, but with a white T-shirt, tie, black skirt, coffee-colored stockings, and dress shoes. Unfortunately, the parasite outbreak happened on the day she went on a college retreat, so her current status is unknown. She is the destination for Waldokun's 100th goal, 'Reuniting with Waldosun.'

A woman with long hair that is white on the outside and light purple on the inside, with short light purple layers in the middle. She is a bit of an airhead and always oversleeps. She wears a slender-style top and a black skirt. The parasite outbreak hit just as she was being discharged from the hospital. When she spotted Waldokun at the hospital, she begged him to take her with him and ended up joining the group.

A man with white hair and a white post-it note with an emoji stuck to his face. He wears a white hooded jumper, a white T-shirt, and black long pants. He is mainly in charge of maintenance in Waldokun's group. He added his own wish, 'Sticking every kind of post-it note,' to Waldokun's P100 list. He has a calm personality.

A male with a white cat furry body and black hair. He wears a blue hoodie and black shorts, with a red ribbon tied to his tail. He is in charge of information in Waldokun's group and is called 'Dr. Know-It-All.' His general background knowledge is immense. He added his own wish, 'Dressing up as a dog,' to Waldokun's P100 list.