How is 'Mobu' wasei-eigo? Wikipedia is the only place which posits that the main character of Mob Psycho 100, Shigeo Kageyama, has a nickname 'Mob' which is wasei-eigo for 'background character'.
Mobu is not listed in any list of wasei-eigo words.
Can someone break down how Mobu is wasei-eigo?
As mentioned in the comments by F1Krazy already, this information is likely wrong.
The nickname actually originates from his First-name, Shigeo. The Kanji for which can alternatively be read as &quot;Mob&quot; (モブ, Mobu).
This is also confirmed to be the source of his nickname in the Character guidebook as mentioned on the Mob Psycho fandom, a copy of which is included at the bottom of the post.
All though Mobu might not be wasei-eigo for &quot;background character&quot;, it does infer such a character. Some more background on this can be found on Japanese.SE's question: Etymology of モブ