Logan Mellark is the eldest son out of the 3 children. His mother is Sophie Mellark and his father is Zander Mellark. He began being a baker at a young age, being in an environment of a bakery. His mother was harsh to him, but hot as harsh as she was to Peeta, the youngest son in the family.
74th Hunger Games
When Peeta was reaped, Logan was too old to volunteer. However, Katniss mentions that if he was 18 he might have volunteered for him.
75th Hunger Games
He is very scared when Peeta is picked for the Games again. 34 mins after the Games end, the Capitol bombs 12, including the bakery, killing him.