zeta (halloween) (granblue fantasy)

Zeta in her halloween costume. Way back in 2016, there was an artwork (post #2529658) of Zeta and Vaseraga in halloween costumes. This concept gets re-used in their halloween version dual unit released on October 2019, along with the exact same outfits they wore in that artwork.

This tag implicates zeta_(granblue_fantasy) (learn more).