In the animated series Amphibia , the tenth episode of Season 3 is literally titled .
While not titled "Mr. X," the Season 3 finale of Mr. Robot (S3E10) is a pivotal moment for the titular character, . [S3E10] Mr X
There are two major pop culture references for titled or involving a character named " Mr. X ." Amphibia: "Mr. X" In the animated series Amphibia , the tenth