Rak Wraithraiser

Rak is originally a 3 meter tall creature, but after he mocked the Ranker Yu Han Sung, the Second Floor Test Director, his body was shrunken by them. He eventually found out how to get back to his original size. As a being who can control their body size, he is a Compression Licenser.

He is a direct descendant of the Native One, a type of being that is able to rule over the elements in the Tower.

Rak doesn't come off as particularly smart; he thinks he's superior to almost everyone else and so refers to other people as "turtles". He occasionally calls himself "Rakleader" when he is feeling particularly full of himself, although Khun may be to blame for indulging him. He tries to make himself appear tough, although he's actually a bit of a baby sometimes. However, he does seem to have a little of a caring side in him.