Ninja

A person dressed as a ninja with a black hood, a mask covering the lower half of their face, and the hilt of a knife or sword emerging from behind their shoulder.

The now-discontinued Microsoft ZWJ sequence 🐱‍👤 Ninja Cat did not include the ninja emoji at all as it was developed several years before ninja was approved. It combined 🐱 Cat Face and 👤 Bust in Silhouette and was only available from Microsoft prior to the debut of the Fluent emoji set in November 2021.