Always Chaotic Evil
Always Chaotic Evil is a slang term that /tg/ has picked up from our frenemies over on TVTropes. The term originates from Dungeons & Dragons and specifically its early use of the mechanics of alignment. In the Monster Manual, creatures would always have their "alignment propensity", the specific alignment that the "average" member of their species would have, listed as part of their statblock.
It's mostly used as an easy placeholder term for the "typically villainous races" - orcs, goblinoids, gnolls, ogres, etc. A handy way to refer to the usual "chuck 'em at the PCs and let them hack 'em down" cannon fodder races.
The term has gotten a little unwelcome on /tg/ in modern years, as the basic idea that thinking humanoid races are somehow inherently evil and deserve only extermination is seen as being... well, a little too /pol/-friendly. That and what's the point of roleplaying if you can't go against type (meaningfully, mind you)? These last years, focus has somewhat shifted to throwing people actively doing evil things (Slavers, Nazi's, etc...) as chaff to be exterminated to players instead of kobolds and their ilk.
It is telling that the "father" of modern Fantasy, J.R.R. Tolkien himself presented orcs as the servants of evil 'overlords', but was uncomfortable with the notion of 'born evil' or 'always evil'. (The solution, such as it was, that Tolkien used was that Orcs were effectively resurrectively immortal, and had been under the influence of Morgoth (read: Satan) and later Sauron (the Evil Overlord of the setting) for thousands of years by the start of the story--and even then, as soon as Sauron's will vanished, so did their desire to fight, meaning that they were probably under some form of mind control at the time as well)
The usual standard for "Entirely evil species" nowadays requires they be reborn into that race after a sufficient amount of Evildoing (for example, Devils that recruit from those sent to Hell), have biological requirements incompatible with peaceful coexistence (e.g., vampires who are required to kill living sentient beings in order to survive), they be directly "Made of Evil" (e.g., creatures made purely from the emotion of Hate or Greed), or that they be "biologically evil" in a way that requires them to be either stupidly violent or part of a hive-mind (e.g., the Orks and Tyranids in Warhammer 40,000).
That being said, Goblins and Orcs and the like are still sword and spell fodder, but nowadays the conflict is more likely to be cultural ("they want us off what they consider their land") or religious ("the Blood God demands Blood, and they think your little hamlet looks like it can supply a large quantity thereof"), and non-combatant Orcs are likely to be treated as well as any other enemy non-combatants.
See Also
- Detect Evil
- Demon, which depending on gameline and/or setting may or may not qualify
- Orc, for the original "Always Chaotic Evil" race
- Baatezu, for a fairly standard case of "Recruited and Recreated from Already Evil People"
- The Orc Baby Dilemma