The Sea Kings acknowledge the strength of Luffy's will and note that he can "hear" them, a trait shared with the late Pirate King, Gol D. Roger.
It is revealed that Shirahoshi unintentionally summoned the Sea Kings through her desire to save the island, confirming her identity as the Ancient Weapon Poseidon . One Piece (Dub) Episode 567
King Neptune laments the destruction of Noah , noting it was a historical artifact meant for a promise involving Joy Boy , though its survival is ultimately secured by the Sea Kings. The Sea Kings acknowledge the strength of Luffy's
Following the defeat of Hordy Jones, Luffy focuses all his strength on destroying the massive ship Noah before it can crash into Fish-Man Island. King Neptune laments the destruction of Noah ,
Just as Luffy is about to completely obliterate the ship, massive Sea Kings appear and halt its descent by catching the chains.