I'm looking for manga/anime/etc where the protagonist (or one of the main characters) fakes their personality or whose personality is different from their appearance.

Maybe they're pretending to be a polite/kind/naïve/goody-two-shoes golden prince type when in actuality they're the type to curse/get into fights and/or secretly have tattoos/piercings/scars.

Or maybe they're the quiet loner but are secretly badass.

Or maybe they appear tough/scary or are rumored to be some violent delinquent, but they're actually completely misunderstood.

Or maybe they're a genius but they pretend to be stupid/incompetent because they're lazy.

For example:

Light Yagami from Death Note

The Sun Knight from Wuming Qishi

Akechi Goro from Persona 5

Protagonist from Persona 5

Miyamura from Horimiya

Ryuuji from Toradora!

Lelouch from Code Geass.

Cale Henituse from Lout of Count's Family

please for the love of god ignore my username i made this account when i was in middle school

Put the Trash to Where It Belongs!

Tomodachi Game
My Dearest Self with Malice Aforethought

Ouji-sama ni wa Doku ga Aru.
Skip Beat!
Cheese in the Trap
Kareshi Kanojo no Jijou