Who would be some good characters to include in a Miraculous Ladybug crossover fanfic?

One possibility could be Reverse - Flash. He could be interested in the Miraculous powers and try to steal them for his own evil purposes. He might see the power of the Miraculous as a way to enhance his own speed or gain new abilities.

It could include a transformation of the Princess Diaries' setting into a more Miraculous Ladybug - like world. For instance, the kingdom in The Princess Diaries could be under threat from an akuma - like force. And the characters from both universes would have to work together to stop it. Maybe Mia could be given a temporary Miraculous to help in the fight.

Obviously, Ladybug and Chat Noir are the heroes in the Miraculous world, so they would be main characters. In Frozen, Elsa and Anna are the key figures. However, we might also see other characters like Tikki and Plagg from Miraculous having some interactions with the Frozen characters. For example, Tikki might be fascinated by Elsa's ice powers and try to understand how they work compared to the Miraculous powers.

Well, obviously Ladybug and Chat Noir should be in it. They could interact with the cousins and help them learn about their powers. Then there could be the villain characters like Hawk Moth. His presence can create conflict and challenges for the cousins. Another good character could be Master Fu. He can guide the cousins in understanding the deeper meaning and responsibilities of the Miraculous.

Obviously Ladybug (Marinette) and Cat Noir (Adrien) are must - includes. Their dynamic during a sleepover would be really interesting, like when they're not in superhero mode but still have that connection. Alya would also be great as she's Marinette's best friend and is always eager to be involved in anything Miraculous - related. And Tikki and Plagg, the kwamis, could add a lot of humor. They could be causing little bits of chaos while the humans are trying to have a normal sleepover, like stealing snacks or making strange noises to get attention.

You could include characters from other crime - themed games like Tommy Vercetti from Grand Theft Auto: Vice City. His experience in the crime world could create some interesting dynamics with the Mafia 3 characters. They could either be rivals or form an uneasy alliance.

Definitely Superman if it's a DC crossover. His super strength and ability to fly could add a whole new dynamic to the battles against Hawk Moth. He could also be a mentor figure to Ladybug and Chat Noir, teaching them about using their powers more responsibly on a global scale.

If it's a crossover with 'Doctor Who', the Doctor would be an amazing addition. His vast knowledge of different cultures and species could help the BAU in cases that have an otherworldly aspect. And his time - traveling ability could add an interesting twist to the story.

In a crossover with 'Powerpuff Girls', the Professor could be an interesting character to include. He might study Zim's technology and try to find a way to use it for good, while the Powerpuff Girls are busy fighting Zim's minions. And Zim would be both fascinated and enraged by the super - powered girls.

From other franchises, Link from The Legend of Zelda could be an interesting addition. His sword - fighting skills and puzzle - solving abilities would contrast with Sonic's speed - based combat. He could be on a quest in Sonic's world and end up teaming up with Sonic to defeat a common enemy. Another character could be Samus Aran from Metroid. Her powerful weapons and armored suit could bring a new level of badassery to the fanfic, and she could have some interesting interactions with Sonic and his friends.