Where did the little angel/devil on your shoulder thing start?

Question

Where did the little angel/devil on your shoulder thing start?

Answer 1

my great grandpa it really happened to him lol

Answer 2

This idea originated from the Islamic belief of two angels residing on either shoulder of humans which records their good and bad deeds.  They are called shoulder angels.

Kirama Katibin (Arabic: كراماً كاتبين), or "honourable recorders", are two angels in Islam who record a person's good and bad deeds. These angels sit on a person's right and left shoulders respectively. If there is one type of deed that dominates more than the other, then that type decides if one is sent to the Jannah (heaven) or the Jahannam (h**l).

At the end of salah (ritual prayer), Sunni Muslims say a salutation to these angels.[1]

The shoulder angels of animated cartoons and modern popular culture are derived from this belief.

Answer 3

From the Quran :

Behold, two (guardian angels) appointed to learn (his doings) learn (and noted them), one sitting on the right and one on the left.

Not a word does he utter but there is a sentinel by him, ready (to note it).

50:17