Boris is a supporting protagonist in Bendy and the Ink Machine and the deuteragonist of Chapter 2 onwards.
Boris is a black anthropomorphic wolf with white gloves, white overall with knee patches, and black shoes.
Chapter 1: Moving Pictures
A dead clone of Boris appears in a room tied to a table with his heart removed.
Chapter 2: The Old Song
Boris appears at the end of the chapter after that Henry escaped from "Bendy".
Chapter 3: Rise and Fall
In this chapter Boris supports Henry trying to help him to reach the exit. It's also revealed that there is a big amount of Boris clones and that they were all killed by "Alice", a version of the character Alice Angel who is trying to achieve "perfection" using ink creature innards. At the end of chapter 3, Boris gets captured by "Alice" after he and Henry survived a fall down an elevator shaft.
Chapter 4: Colossal Wonders
Boris, who has been turned by "Alice" into her minion, Brute Borice, throws Henry aside when he is riding a haunted house cart to "Alice"s lair, and Henry has to fight him, eventually killing him, leading to Boris fading away after his defeat.
Unlike Bendy and "Alice", Boris is very helpful and kind. It is hinted that in the show he doesn't like Bendy. Boris has a simple-minded attitude and he gets clumsy, sometimes geting cross when he is disturbed. He doesn't seem very talkative, and is rather timid in nature whenever an enemy lurks nearby.