is one piece episode 644 filler?

Off the coast of Dressrosa on the Thousand Sunny, Nami, Brook, Chopper, and Momonosuke are inspecting what has happened inside of the ship. Suddenly, someone appears and uses a strange power to redesign the door shocking the others.

The women walks out of the room and Nami askes who she is. Two men appear and they introduce her as Giolla of the Donquixote Family under Trebol's Army.

Giolla then says she has an idea and uses her strange powers to redesign Nami, Brook, Chopper, and Momonosuke into odd-looking characters.