The final boss?

my opinion is either gwyn or arthur or delta final boss do you think who is the final boss and I like arthuru heartz a because I like the heartz room 29 was the champion in section 29, and arthurun helli heartz be like the dead group, maybe beating champion gwyn arthuru and will break the apoclypse and b- 157 new genesis uptadeyi will take 3sezon phi like this is my opinion