Trench's Links
Otto is 'the one that got away' in terms of meals and Trench has decided to do everything he can to make them suffer because of it.
Otto is terrified of Trench and will attempt to avoid him at all costs.
Trench enjoys making Cain miserable and keeping him a social outcast. With Cain becoming Otto's surrogate father, this sick fascination of Trench's has become even more pronounced.
Cain tries to keep out of Trench's way generally. He is unaware of Trench's identity as a shapechanger nor as a Griffolk-eater.