Victor, like his sister, Bronwyn Bruntley, has the peculiarity of super strength. One feat of his peculiarity included lifting a boulder with a single hand. Both are said to be as strong as ten men.
Victor (along with his younger sister, Bronwyn), lived in Miss Peregrine's Home at some point, but he wasn't too fond of it. He felt left out. His displeasure at the home prompted him to leave the loop, shortly after which he was murdered by a hollow. This deeply saddened everyone, especially Bronwyn and Miss Peregrine.
DeathVictor Bruntley was killed by a hollowgast after leaving Miss Peregrine's loop when he "couldn't stand it any longer", as Emma explains to Jake. In an earlier chapter, it is revealed by Enoch that Victor's death is the reason that Miss Peregrine wears black, and is very strict on the matter. It is unsure how the peculiars retrieved his body. It can only be assumed Miss Peregrine had retrieved it.
Jacob Portman - Jacob meets Victor when Victor is dead. At first, Jacob thought he was sleeping, but then discovers that he is no longer alive.
Enoch O'Connor - In the film, Enoch uses one of his hearts to briefly bring Victor back to life. He does this to scare Jacob.
Bronwyn Bruntley - Victor's little sister, Bronwyn, is very sensitive over the topic of her older brother and is brought to tears by the sight of his body.
Miss Peregrine - On the subject of Victor, Miss Peregrine is said to be very stern and would punish the children if she had known they entered the room where he lay. She always wears black because of his death.
Emma Bloom - In Chapter 9 of Miss Peregrine's Home for Peculiar Children, Emma tells Jacob about what caused Victor's death and why it happened. She also expresses sympathetic feelings toward Victor over the matter.