Speculations Imu has been observing Luffy carefully since pre timeskip and the possible devil fruit.

[Jesse Pinkman]

If you remember those giant looking figure in thriller bark arc observing luffy.

The one we saw in current chapter panel matches the description. Tall umibozu like figure that haunts the sea.

Is Im a sea monster or devil ?? If its true then the figures in florian triangle not only observed luffy but keeping an eye on moriah.

If you remember doffy was ordererd to kill moriah. It seems world govt had eyes on moriah's fruit for a while.

Question is was it imu we have seen way back in florian triangle. Do you think Imu possess sea devil fruit after umibozu a sea devil that haunts the sea .

 

[MarineHQ]

Ah the Florian triangle shadows, a mystery that to me is as important as the OP itself.

 

[Thaidakar]

Oda already forgot those shadows bros

 

[straightforward]

yeah I think that was imu or one of the loros

saturn used a similar power on egghead i think

 

[Herrera95]

Nope. No one was observing Luffy.

If anything just when Luffy was reported to be at Onigashima raiding against Kaido they got their attention to him. And somehow discovery about his Devil Fruit.

 

[SkySanji]

Imu and the Gorosei aren't several kilometers tall lol and it wouldn't make any sense for them to just casually be hanging around the Florian Triangle.

 

[gz89]

Those shadows in TB had the size of Zunisha or some huge Sea Kings.
If it was Imu he is the most retarded villain ever if he let rookie Luffy go away.