User blog comment:Xilinoc/Ch. 578 (I'm not gonna spoil the title like Schiffy did)/@comment-6963992-20140423223414/@comment-11051098-20140424171035

Seeing as the power of imagination is such a powerful ability when you can turn your imagination into reality, Gremmy didn't really need a Vollständig. I suppose Kubo might have gone along with that.