The creature that attacks Knight Titus is a Yao Guai, a mutated American black bear that's been a common enemy in Fallout since Fallout 3. According to a quote in Fallout 4 the name came from ...
The first Radroach attack happens in Episode ... Fallout's brilliant radioactive mutated bear species, the Yao Guai, has been in the games since Fallout 3 and shows up at a pivotal plot point ...