Kuo-Toa are native to the Underdark. One of their racial traits is that they make up deities and have such STRONG faith in them that they manifest actual divine powers.
When Drizzt leaves Menzoberranzan, he stumbles onto a tribe of Kuo-Toa. He beats an enemy in front of them. They fall down at his feet and praise their new god. He is confused but sticks around because the fish-people are so nice to him and he's lonely. In return, he protects them and teaches them to fight better (and also reins in their murder instincts). The tribe prospers. Their faith grows.
By the time House Do'urden hunts him down, they're facing a small-god with a fishman army.
Edit: this is stuff from a dnd session the Baldur's Gate 3 voice actors played as their characters, hosted and run by High Rollers. It's in two parts and it's very cute. You can watch it on YouTube.
It started as an exercise for my 2D animation course with @zyngaro but became a much bigger project than anticipated! xD So here you go: one of my favorite moments of the second episode of @HighRollersDnD one shot with the full Baldur's Gate 3 companions cast!
I reeeeealy loved Neil performance with Astarion seeing Drizzt (since I'm also a fan of the legendary drow!).
Congratulations for the GOTY awards, guysssssssss!!! ❤️❤️❤️❤️❤️❤️
One of my favorite Astarion lines when you select him has to be the “More like Drizzt DON’T’Urden!” one. Not because it’s actually funny, but because there’s never anything Drizzt Do’Urden related happening whenever he says it. He’s just Thinking About Him.