The Quarry Master by Amanda Milo

BASH: I dislike people.
I despise humans.
A cruel mandate from one of my region’s rulers has saddled me with a slew of little alien humans: I’m to put them to work.
One problem?
I run a rock quarry, where humans’ thin skin is a detriment to productivity.
Overseeing these humans is like trying to herd yanaks. If I don’t burn, beat, or strangle them to death by the day’s end, it will be a miracle.

ISLA: I can tell the boss likes me, because I’m not dead. Bash is abrasive and acerbic, like an alien love child of Michael Caine and Miss Hannigan. And maybe Ebenezer Scrooge. Bash is a little… anti-human race.
But he’s not all bad. Sure, he’s a little growly and he sets things on fire when he gets mad, but even villains need a friend. And here? Bash is everybody’s villain.
Everyone’s but mine.