Overall, she will gain a massive stat boost with Severed Innocence. A standard S-rank W-Engine like The Brimstone could be an alternate option for Soldier 0 Anby. Aside from being an accessible ...

That said, here's my best ZZZ Billy build, plus what materials you ... W-Engine: Starlight Engine Replica or The Brimstone The best W-Engine for Billy is definitely the A-tier Starlight Engine ...