Childhood friend of Victor Frankenstein. Henry is a noble man, a nice humane person. He is the exact opposite to Victor. Henry does not care for science. Henry is a humanities type and wishes to be famous.
Henry respects Victor's privacy and never tries to disrespect that. But because of this mistake, even though its a good trait, this does not help either character. Victor has no one to tell him what he is doing is wrong. Henry is killed without knowing really the reason why. Victor is hurt bad from Henry's death. Even though the death of his brother was tough, it wasn't his long time friend, the only one he really could trust.
http://www.shmoop.com/frankenstein/henry-clerval.html This is the citation for both pic and info