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Twenty-Fifth Baam (스물다섯번째 밤, Seumooldahseotbeonjjae Bahm; "Twenty-Fifth Night") or simply Baam for short, is an Irregular and one of the main protagonists of Tower of God. Baam entered the Tower in search of his best friend Rachel, another Irregular, and after passing Headon's test he was deemed worthy of climbing the Tower. After later being forcibly recruited into FUG, Baam joined Team Tangsooyook and managed to escape from FUG's clutches, eventually reuniting with his old friends and teammates. Due to his affiliations with FUG, he also goes by the name Jyu Viole Grace (쥬 비올레 그레이스, Jyu Biolle Geuleiseu).  

Notes and Trivia

• In Korean, the word "baam" has two meanings: one is "night" and the other "chestnut." The latter meaning is highlighted by Headon, who abbreviates his name to Baam, joking, "It has become a tasty name!", and the Second Floor Guardian who tells Baam, "You... look tasty".
• He goes under the alias Jyu Viole Grace in Season 2. It is speculated that he might have been adopted by the leader of FUG, Grace Mirchea Luslec, but this has yet to be confirmed. When he meets Garam Zahard on the 43rd Floor, she tells him that his name comes from his parents -- "Grace" from Grace Arlen and "Viole" is probably from V.
• It has been stated in a blog post by SIU that the origin of the name "Viole" is the colour violet. Coincidentally, "Viole" is an old French word used to describe a European bowed stringed instrument used in the Medieval period.
• Because of his status as a Slayer Candidate, Baam has financial backup from FUG up to the point where it can surprise many Rankers. It has been exemplified by Ha Jinsung buying Lo Po Bia Elaine for an unthinkable sum even for Great families' financiers.
• He is apparently a great cook, having to cook for himself and Yeon, with Wangnan even calling him a super chef. His best dish is cream spaghetti, which happens to be a dish Androssi ordered before the Submerged Fish Test.
• Surprisingly, Viole's clothes are all picked by Ha Jinsung. He is troubled by the fact that Jinsung sends him clothes every season.
• According to Hwa Ryun, it is thanks to Ha Jinsung that FUG gives some freedom to Baam.
• After the 28th Floor test, Viole buys junk food items for Team Tangsooyook. However, he has to eat them in secret or else Goseng will confiscate them since they're unhealthy. As a result, Viole has become a "black market" supplier and is very much loved by Miseng and Prince.
• He is ambidextrous, but was taught to use his right hand more.
• SIU stated that both he and Rachel know many secrets about the Outside.
• He is presumed to be the once-dead son of Grace Arlen and V, who was later brought back to life by an "Outside God". This was revealed by Garam Zahard on the 43rd floor using Arlen's pocket as evidence, a fact confirmed later by one of the 10 leaders, Poe Bidau Gustang .