Another possibility for main characters could be Rainbow Dash from MLP and Blastoise from Pokemon. Rainbow Dash is brave and loves adventures, which would be perfect for exploring the new Pokemon world. Blastoise is strong and reliable. They could form a great team, with Rainbow Dash using her speed to scout ahead and Blastoise using its water attacks to protect them from danger.
Definitely Twilight Sparkle could be a main character. She is intelligent and her magic skills would be useful when dealing with the unknown world of robots. Also, a friendly robot like B - 12 (from a different robot - related story) could be a main character. They could form an unlikely duo to explore their combined world.
Twilight Sparkle and Luke Skywalker could be main characters. Twilight's knowledge of magic and her inquisitive nature would make her a great counterpart to Luke's Jedi training and his journey of self - discovery. They could learn from each other and face challenges together.
One possible plot could be that the ponies from MLP accidentally enter the Pokemon world. They are confused at first but then start to make friends with the Pokemon. The ponies might use their unique abilities like magic to help the Pokemon in some situations, and in return, the Pokemon show them the wonders of their world.
One possible plot could be that a group of Pokemon accidentally get teleported to the world of My Little Pony. They then have to find a way back home while also dealing with the different cultures and magic in the MLP world. For example, Pikachu might be really curious about the colorful ponies and their friendship magic, and try to learn how it works.
Definitely Pikachu from Pokemon. It's so cute and full of energy. In the MLP world, it could befriend Fluttershy because she's good with small and cute animals. Another interesting character would be Charizard. Its big and powerful presence would be quite a contrast to the ponies. And from MLP, Rainbow Dash would be a great character to include as she's adventurous and could have some really fun interactions with the Pokemon.
Dr. Eggman could team up with a Pokemon villain like Team Rocket. They could combine their technology and evil plans. Eggman might use Team Rocket's knowledge of Pokemon to capture strong Pokemon and use them in his machines, while Team Rocket could benefit from Eggman's advanced robotics to create more powerful devices for stealing Pokemon.
Obviously, Ash and Red are the main characters. Ash is the well - known protagonist from the Pokemon anime series, and Red is a famous character from the Pokemon games.
Peter Parker (Spider - Man) and Rainbow Dash could also be the main characters. Rainbow Dash's boldness and flying skills combined with Spider - Man's powers would make for an exciting duo. They could compete in friendly challenges while also saving the day in both their worlds.
Pinkie Pie would be an obvious choice as she is closely associated with cupcakes in the MLP world. She could be the lead character, coming up with new cupcake ideas and spreading her love for cupcakes throughout Ponyville.
Fluttershy and Big Macintosh would be an unexpected but sweet choice for main characters in an MLP wedding fanfic. Fluttershy's gentle nature combined with Big Mac's quiet strength would create a really heartwarming story. And all the farm animals that Fluttershy loves and Big Mac's family on the farm could be part of the wedding, adding a unique touch to the story.