One interesting aspect could be the unique combination of the My Little Pony and SpongeBob SquarePants universes. It might bring together different character traits and story elements in a really unexpected way. For example, seeing how a pony would react in Bikini Bottom or how SpongeBob would handle the magical world of Equestria.
You should also consider the tone you want to set. Since it's a parody, it can be light - hearted and humorous. Maybe start with a funny situation, like Rainbow Dash getting stuck in a jellyfish field in Bikini Bottom. And don't be afraid to exaggerate the characteristics of the characters for comedic effect. For instance, make Squidward even more grumpy when he has to deal with the overly - enthusiastic ponies.
The main character of the American animated series," He was a square yellow sponge living in a pineapple on Bikini Beach. He was the senior chef of King Krabby Castle and liked to catch jellyfish. His pet was a small sea snail that could call out "cat ~ cat ~" He was optimistic and naive. He could always cause trouble in a peaceful world, but he could always get out of trouble in the end. His friends included Patrick Star, Brother Octopus, and Sandy. "SpongeBob SquarePants" was one of the most popular TV series in the United States. It was voted the most popular cartoon at the American Children's Choice Awards for seven consecutive years from 2003 to 2009.
No. The original Spongebob series is all about fun, friendship and adventures in Bikini Bottom. The 'Spongebob real story' is a completely different and often very dark and inappropriate take that has nothing to do with the original positive nature of the show.
A new character, like a traveling musician fish. Spongebob is always open to new things and experiences, and a music - loving fish could charm him with her melodies. She could perform at the Krusty Krab and Spongebob would be entranced by her talent.
Mr. Krabs would probably be thinking about how this could be good for business. He might see it as an opportunity to create a new tourist attraction. Patrick would be really happy for Spongebob at first, but then he might get a bit jealous because he doesn't want to lose his best friend. Squidward would be extremely annoyed by all the commotion and the fact that he has to be part of the wedding in some way.
One way would be to introduce a new character who is interested in Spongebob. This would make Sandy realize her feelings for him. They could then have a series of events where they are forced to work together closely, like building a big project for the whole Bikini Bottom. During this process, they would start to notice the little things about each other that they like. Their friendship would slowly transform into a love story as they start to hold hands, exchange little gifts, and have secret looks at each other.