system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Has Joker ever truly begged for mercy?

In most times when Joker dies or is on the brink of death, he still laughs himself silly, or at least to the best of his limited abilities depending on the situation, but has Joker ever truly been scared to the point of genuinely groveling and begging for his life?
gpt
TAS Episode 'Joker's Favor'

He was about to be blown up by a lowly accountant he'd blackmailed into helping his latest scheme. The thought of being killed by someone ordinary terrified him. 

Similarly, BATB's take on Emperor Joker had him try to invade Batman's mind, where he was confronted with his worst fear: going back to be an ordinary overlooked struggling comedian. He screamed with horror.