Why was Merry at the last battle?

[Eomer of the Rohirrim]

Originally Posted by Morthoron

Don't worry, it'll come around again. It sometimes takes four or five years, but someone will post on the original topic again.

You called?

I think it would be funny if, in an ode to Merry's pointless appearance at the battle of the Black Gate, they got him to show up at the Battle of Five Armies. It would be quirky, you know? Fans would love it.