Title ^ A ninja that's hax for no real reason or interference. Will it be one of the new kids? Has the new Hashirama already hit his peak and actually hiding his overwhelming strength? Is it Kiba?
Hashirama has a reason for being hax, and depending on how you view transmigration, he has interference as well.
Reason: He was Asura's transmigrant and has the powerful mokuton KKG.
Interference: He has Asura's chakara (if you count transmigration as interference).
Either way though, I see what you mean.
It's notable that of the 4 transmigrants that we know of (Hashirama, Madara, Naruto and Sasuke), Hashirama is the only one who became strong without either stealing any eyes/chakara/DNA from anyone else, or being given any eyes/chakara/DNA by someone else (not including Asura's chakara itself).