Originally Posted by
KisaiTenshi
Honestly, if you're playing PotD just to avoid playing the regular content, the "boss"'s of each floor do not hit nearly as hard as regular content bosses do, so anyone can tank.
But...
The ideal situation is for whoever has the "dark red" weapon (and presumably level 90+ Aether gear) to tank. If nobody in the party has one (you can look at what level everyone has if you're not sure) then whoever has the highest rated armor and weapon should do it. That said, the gear is level synced to the floor. So a level 99 gear is always synced downward on any floor but 90's+.