I've seen Kakashi being refered to as Copy Ninja, but lately I've seen scans refering to him as Mirror Ninja Kakashi. Are they both accepted or is one of them mistranslated?

Is Kakashi the only sharingan user who can copy jutsu? Can other sharingan users copy jutsus? - Quora

Kakashi The copy Ninja : r/Naruto

Can Kakashi still use the techniques he copied now that he doesn't have the Sharingan? - Quora

If Kakashi is “the copy cat ninja” because he possessed one Sharingan, why aren't all Uchihas considered 'copy cat ninjas'? - Quora

Is Kakashi the only sharingan user who can copy jutsu? Can other sharingan users copy jutsus? - Quora

Samaa Samir (Kakashi) — Kakashi is the most underrated character in Naruto

If Kakashi is “the copy cat ninja” because he possessed one Sharingan, why aren't all Uchihas considered 'copy cat ninjas'? - Quora

Considering Kakashi was known as the copy cat ninja, why didn't he copy things like Tsukuyomi? - Quora

Can Kakashi still use the techniques he copied now that he doesn't have the Sharingan? - Quora

Naruto Manga 464 Breakdown and Naruto Manga 465 Spoiler Discussion: Join The Dark Side Today, They Have Cookies 0_0

Naruto Chapter 596 – The Copy Ninja Kakashi