Implicating orc → humanoid
Link to implication

Reason:

Orcs are humanoids.

The humanoid tag is relatively new and lacks a wiki entry, so I should probably explain a bit about it: last year, Azaziel suggested using it as an umbrella tag for various humanoid but non-human & non-furry species that don't fit into any other category.

It covers creatures such as demons, angels, various fantasy races (orcs, goblins, trolls, etc.), some aliens, and... possibly even some Pokemon such as Machamp and Gardevoir.

The tag has been widely used, and even without a wiki entry users don't seem to have much trouble tagging it properly. As for why it's needed? I can think of various reasons, but it seems most useful as blacklist tag: not_furry doesn't cover everything, and some users would like to filter out images where furries are paired with humanoids.

I think we can consider it a valid tag. Does anyone disagree?