Gwi-nam was a student who attended Hyosan High School and was a bully, alongside Son Myeong-hwan, Park Chang-hoon, and Kim Hyeon-ju. When the zombie apocalypse broke out, he later became infected and became a halfbie. 

Yoon Gwinam, Hambie ver :)

Yoon Gwi-nam is the main antagonist in All of Us Are Dead. He is a disgruntled student of Hyosun High. Gwinam, before the outbreak, was a sadistic bully who hurt, exploited, bullied and harassed those around him for fun. However, he was pretty much considered Myeong-Hwans minion along with the other bullies. That’s all he really was, after all…

Yoon Gwinam from All of us are dead. 

Deidara, the youngest member of the akatsuki, is an explosive and artistic young man. Whether that be in his personality, his temper, even down to his very abilities. Everything he does needs to be considered in the name of art— it needs to be destructive and have flair. Because in his eyes, art is an explosion; a fleeting moment in time.

Deidara from Naruto Shippuden

Sal Fisher is a young man from New Jersey who had just recently moved to Nockfell for a “fresh start” or something of the likes. Sal has quite the unique appearance, his blue hair being tied in pigtails and a white prosthetic mask hiding his mangled face.

Sal Fisher from “Sally face”

And they were roommates...

Elliot is a reserved loner who generally prefers the company of books to that of people. Even though he is the Union’s library director, he usually wanders the halls silently by himself, undisturbed by visitors. Necessary interactions are kept to an absolute minimum and he often leaves before others even notice his involvement in the conversation. However, he greatly enjoys sharing his knowledge with curious visitors and answering people's questions about books.