Korra. General Iroh.

That is all.

Korra. Adult Toph.

That is all.

Korra. Zombies.

Just going with the Korra flow here.

A picture of me.

A cool picture of Rick Grimes from The Walking Dead.

Adult Toph, Pohatu, and Gordon Freeman in an epic showdown against The Reapers, Kaptin Bluddflagg, and GlaDOS.

Morgan Freeman?

This would be nice, though if you don't use it I will eventually.

Why not a Rahkshi of lightning? If your name is Electric Turahk, it can fit.

Whatever it is, it needs great lighting, and it needs to be a closeup. And it needs to be distinct. Why not a dramatic picture of the 11th Doctor?

Merida