Grimoire Weiss possesses a sharp tongue and an inflated ego, but often feigns ignorance. He is vehemently against his name being abbreviated, such as names his comrades call him like; "Book." "Weissy-Weiss." Weiss is also a medium of black like magic, although he is the White book, however the more sealed verses he collects, the stronger his magic is. Either way, Weiss loves a good praise or two, it's only natural since he is such a prideful book of unfathomable knowledge. Hes very sassy too.