system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Has there ever been a Sith turn to the light side?

I'm not counting Asajj Ventress here as she's a nightsister who was first raised by a jedi or someone like Quinlan Vos who was a jedi who flirted with the dark side. I'm talking anyone who was born and raised by Sith who had a Mitchell and Webb "are we the bad guys? " moment and decided to turn to the light side?
gpt
Darth Gravid, in an effort to further develop the Grand Plan, began to turn towards the Light in order to learn more of the Force. 

However, this ended with him going completely insane and destroying a lot of collected Sith stuff (setting the Grand Plan back by decades if not centuries) before his apprentice killed him. He’s regarded as a complete FUBAR of a Sith by everyone after him, and his apprentice as a hero to the Order.