Luke finds out that there's a hidden message in Gottlieb's letter to Jackson. Luke heads to Bolshoi Theatre, where with the help of Princess Maria he deciphers the hidden code. But the hidden message reveals Mr. X's shocking identity.
| Title | Mr. X: Appearance |
|---|---|
| Genres | Animation Kids Action & Adventure Sci-Fi & Fantasy |
| Release Date | 2021-04-10 |
| Episode Runtime | 00 Hours 13 Minutes |
| Season Number | 2 |
| Episode Number | 13 |
| Production Companies | Anyzac, Daewon Media, Giggle Garage Animations, SK Broadband |
