Until Wednesday the actor was a mystery so got the name 'Figwit' (or Frodo Is Great, Who Is That).
He appears very briefly, has no lines, not even a close-up, yet die-hard fans have taken rather a shine to the handsome elf.
"It's pretty weird, but I'm flattered," he said.
The cult website has an extensive gallery, songs about Figwit and even includes a debate about which actor is better looking - Figwit or Legolas, played by Orlando Bloom.
"I reckon Orlando Bloom is feeling the pressure. This is my moment. I think this could be it," joked the actor.