In the movie, Ochi barely appears,
but plays a big role as the killer of Rey’s parents. According to Wookieepedia Canon, “After refusing to surrender their daughter's location, Ochi used his dagger to murder them both.”
However, I vaguely remember Ochi wielding a Green Lightsaber (and the dagger) and used it to kill some of his victims.
He is also known as a Sith Assassin, so could this lightsaber be stolen from one of his slain Jedi?
Would appreciate if someone could help verify if such was indeed true in the movie, or I have been mistaken. Thank you!