Rak Wraithraiser (라크 레크레이셔, Rahk Rekraisher; or "Rac Wreckraiser") is a Regular. He unwillingly teamed up with Baam and Koon during the first test on the Second Floor, however, he quickly became attached to Koon and Baam throughout the following tests and inevitably becomes a member of the group. He was selected for the Spear Bearer position. He is a large, powerful warrior and a very confident individual.
It is implied that Rak climbs the Tower in search of 'something that transcends all things'. This would be something above wealth, glory, authority and revenge.
SIU stated that "Wraithraiser" is actually the name of his race.
The Wraithraiser species come from a place where there are only turtles and themselves to be found. Thus, they hunt and eat turtles; and regard everyone but themselves as turtles.
Rak loves bananas but has trouble peeling them. He also hates Quaetro for burning his bananas because they were yellow.
(Answering Baam's question on the meaning of hunt) "To hunt is to make myself stronger. I push through powerful shinsoo and I tear off and eat the skin of the strong!!!! That way I make their strength mine!! So I only fight strong enemies! I came here to find rivals that can make me stronger!! Like you and that weapon!! So! I will hunt you and your weapon! And become stronger!!"
(To the passing Regulars) "You pathetic turtles, all hiding your heads inside your shells because of fear. That's why you're "nothing more than baby turtles". Ones who never freely put out their heads in fear of being eaten. I will go with him. I don't care what happens next. I never lose my prey. You can all just keep hiding in your shells and live a long life."
(To Koon Aguero Agnis when he was moping) "A turtle that's even more useless than I thought. You said you sent a girl to sit by the king because she looked fit? Are you saying that as if you're boasting? If it was me, and there was a female that looked fitting to sit by the Alpha male, I'd snap that Alpha's neck and become the new Alpha. Then, wouldn't who I put beside me be my choice? IN MY EYES, THAT'S WHAT YOU'VE LOST! YOUR BANANA! YOU RETARD!!"
(To Baam while crying in tears, reunited) "You were alive...!! You were really alive....!! The black turtle is alive...!! I won't let you go... I won't forgive.. those who made you like this... I won't forgive them!!
(To Enemies in Workshop Battle) "If anyone tries to get in my way, I will crush them all!! I come! to meet the black turtle!!