Toliver

MerQueen is the slash ship between Oliver Queen and Tommy Merlyn from the Arrow fandom.

Canon
Tommy and Oliver were best friends since they were young. After Oliver was believed to had died, Tommy mourned him, but also went through different ways to try and find a way that Oliver could be alive. Once Oliver returned to Star City, Tommy wanted everything to be the same, but Oliver was to changed by his time on Lian-Yu as well as taking up his time being the Hood. Tommy finds out that Oliver is the Hood and a rift is driven between them. The two make mends but are driven apart again. When Tommy goes to the Glades to save Laurel a building falls on top of him. Oliver reaches a dying Tommy but is unable to save him. To honor his friend Oliver vows to stop killing as the Hood.

Fandom
AO3

Trivia

 * Both have dated Laurel Lance
 * In the comics Tommy Merlyn is also an archer but is a mercenary and not a hero like Oliver