Here, you'll find two super mutants named Jim and Joe Grimm. Joe stands over his injured brother, Jim, after he was injured by a landmine. If the player helps heal Jim, both mutants will later be available in the recruitment pool.
Jim and Joe's personas are reversed after this encounter - the recruitable version of Jim is actually "the brains of the outfit" and his brother Joe becomes a stupid (IN 3) that "likes to bash things and act all masculine".
Joe and Jim Grimm are a reference to Jacob and Wilhelm Grimm who are popularly known for publishing a number of German folktales during the early 19th century (Hansel and Gretel, Cinderella, etc. to name a few). In this parody, however, the Grimm brothers are semi-illiterate. Jim says, "Sorry, brother, me stupid." Joe, despite carrying a copy of Big Book of Science and Dean's Electronics (both of which can be stolen), says, "the old Brotherhood would of shot first and asked questions later."