Who is the boy from Katniss' hallucination?

Question

At the beginning of The Hunger Games: Catching Fire when Katniss is hunting with Gale, she tries to shoot some birds. When shooting she suddenly imagines a boy getting hit by the arrow, much to her shock. This hallucination is likely part of her PTSD after the Hunger Games.

But I wonder, was this actually a flashback of a particular tribute she killed during the first movie or was this just some random boy she imagined to have killed now?

Answer 1

This is a flashback of Marvel, the tribute who killed Rue in the first film. In retaliation, Katniss killed him. As a review of this page shows, this was the first person she killed, which is likely why she is having flashbacks.