From famed actors to musical talents as well as sports entertainers and sports icons, etc., with SpongeBob SquarePants now having a 13th season, or even more seasons, just for future ifs.
Note that the Stephen Hillenburg himself wished no crossover for the show, 'cause he was a marine biologist and the show would've lost its meaning on what it truly means livin' in the sea.
Check this link to understand:
1. https://spongebob.fandom.com/f/p/4400000000000321384
2. https://spongebob.fandom.com/f/p/4400000000000332809
3. https://spongebob.fandom.com/wiki/List_of_guest_stars
4. https://spongebob.fandom.com/wiki/The_Seagull_Crew
5. https://spongebob-new-fanon.fandom.com/wiki/Category:Voice_actors
6. https://spongebob.fandom.com/wiki/The_Seagull_Crew?oldid=4208636
7. https://www.youtube.com/watch?v=EwkGueWO7hk
8. https://www.youtube.com/watch?v=EYAQGwo25TE
9. http://www.nickalive.net/2021/04/why-spongebob-has-had-no-real-crossovers.html
10. https://spongebob.fandom.com/f/p/3862146739864092855
11. https://www.youtube.com/watch?v=aDWAAtkILa8
12. https://www.youtube.com/watch?v=uve9fB2uuac
