Summary
Wonder Willis is a secret boss tied to the Bowery music hall in Ossex and shares identity space with the Willis NPC line.
How the fight goes
This is a secret-route style encounter, so the important part is knowing where the trigger sits and how it changes the music hall flow.
Attack patterns
Expect a showy pirate-shark battle with enough spectacle to justify the hidden setup.
Spoils of the fight
This page completes the Ossex music hall secret-boss reference.