xiǎo​guǐ

child

小鬼 xiǎo​guǐ
child noun
a mischievous child, often used as a term of endearment or nickname

You little rascal, playing hide-and-seek with me again!

imp noun
a little demon or low-level ghost, often appearing in folklore as a servant in the underworld

As the saying goes, it's easier to deal with the king of hell than with his little imps.

Frequency

Movie subtitles
10.9 per million appears in 4% of films
Written text
3.57 per million

Sources

Definitions
CC-CEDICT