Marcus Mars - The Itsumade

St. Marcus Mars is the other Gorosei whose power is based on a Japanese yokai. He transforms into an Itsumade, a yokai which possesses the traits of a bird but the torso and thus tail of a snake, as we can see here as drawn by Oda. The itsumade is further described as having sharp talons that can easily tear through flesh, and a grotesque face with a beak of saw-like teeth that can resemble that of a human. Since Mars here appears very bird-like when fully transformed, it’s possible the more human face of the legend may be more visible once he transforms into his hybrid form. The myth says that this creature would appear during epidemics and other times of suffering, haunting the skies of human cities by screaming “Itsumade? Itsumade?” which means “until when?”, as in until when will the suffering continue, having been born as a form incarnate of the suffering of the dead. It was ultimately slain by a local hero, Mayumi Hirorari, who shot it down with the expertise of his bow.

In this case Mars, transformed into his full beast Itsumade, flies up to the skies to the Labophase and charges against its frontier dome. Since the Gorosei can endlessly regenerate, then perhaps he’ll force himself through the laser barrier even if it destroys his body, since after all he only needs to regenerate after, allowing him to attack the Labophase and potentially Vegapunk’s laboratory from where the transmission is coming, making him a grave threat. And let’s not forget that Kaku, York, and the Seraphim are all still in the laboratory as well, so if the latter are given orders that could present a lot of havoc as well. Usopp was able to stop the Sunny from falling off, but they need to get out of there right now.