I made https://vo.codes as a side project to democratize text to speech. It's got lots of celebrities, politicians, cartoon characters, and tech figures (Paul Graham, Sam Altman, Mark Zuckerberg, et al)
Kids on YouTube found it and are making incredible music videos with it.
Homer Simpson and SpongeBob cover Money Machine: https://youtu.be/iBpqJF5LXX4
SpongeBob covers WAP (NSFW!) : https://youtu.be/dSgd4PoQofQ
SpongeBob covers 6IX9INE : https://youtu.be/IKs5iWVRE94
I'm planning to do the same thing as these folks after I finish my real time voice conversion system. It's a killer app for Discord and TeamSpeak - you can talk in real time as Gilbert Gottfried, SpongeBob, or Donald Trump.