Marco is shocked with rayleigh power (English Sub)

Marco is shocked with rayleigh power (English Sub)
Marco is shocked with rayleigh power (English Sub)
Marco is shocked with rayleigh power (English Sub)
Marco is shocked with rayleigh power (English Sub)
Marco is shocked with rayleigh power (English Sub)
One Piece English Sub

[@Oleksa-Derevianchenko]

Hmmm... Not needing to sleep since birth. That's interesting. This might imply that Blackbeard isn't a human. Given his extraordinary toughness (he tanked most of his opponents first attacks in shawn fights), that was to be expected.
Also, in recent manga chapters (SPOILER ALERT)...
...
...
it is shown that world's higher ups are aware of Blackbeard's lineage. Which adds another argument to the hypothesis of Blackbeard not being a human but something else.