User blog comment:박재영/SIU's blog's post 1. Phantaminum/@comment-28805348-20160621005609

Lol did you even read the wiki? His mysterious appearance and disappearance from The Tower left many unanswered questions, which is how Phantaminum got the sobriquet, "Riddle". Another reason is his combat style. It is said that he had a freewheeling and desultory combat style and had used a weapon that had not been seen anywhere inside the Tower. Most of the eye-witnesses either died or lost their minds with fear, so the stories were not accurately reported. Put simply, Phantaminum is a monster whose information starts and ends with a riddle.