BB-17 Grimm

BB-17 Grimm is introduced in the eighth and final installment of the series, "Grimm's Legacy," where the character appears to serve as a pivotal figure in the culmination of the overarching narrative. Despite limited information available across the series, BB-17 Grimm's presence in the concluding book suggests a significant role in resolving long-standing plot threads and character arcs. The character's introduction at this late stage indicates they may be connected to the series' central mysteries or serve as a key to unlocking the legacy that protagonist Grimm has been building throughout the previous seven books.