Rak Wraithraiser is a Regular. He unwillingly teamed up with Baam and Khun during the first test on the Second Floor and passed other tests with them. He was selected for the Spear Bearer position. He is a large and powerful warrior and a very confident individual.
Rak is originally a giant-size creature, but after he mocked Ranker Yu Han Sung, the Second Floor Test Director, his body was shrunken intentionally by the Ranker. He eventually found out how to get back to his giant-size. Because of this, he also becomes one of Compression Licenser users.
He is a direct descendant of the Native One, a type of beings that are able to rule over the elements in the Tower.