Samus Aran from Metroid could be an interesting addition. Her high - tech weaponry and space - faring adventures would be a great contrast to Shovel Knight's medieval - inspired world. Maybe she gets stranded in his world and they have to work together to get her back home, all while fighting off the forces of evil in Shovel Knight's land.
How about Sonic the Hedgehog? His super - speed could add a new dimension to the story. He could help Shovel Knight quickly traverse the map, while Shovel Knight could use his shovel to uncover shortcuts or hidden items that Sonic's speed alone couldn't find. It would be a fun mix of two very different gameplay styles.
In a crossover with 'My Hero Academia', Izuku Midoriya could be a great addition. His determination and growth as a hero could contrast and complement the development of the failed knight. They could train together and learn from each other's strengths, like the failed knight teaching Midoriya some swordsmanship while Midoriya shows the knight how to better analyze opponents.
Storm from the X - Men would be a great addition. She has control over the weather, which could create some really interesting scenarios when combined with Wolverine's combat skills. For example, she could create a lightning storm while Wolverine battles enemies in the rain, using the flashes of lightning to his advantage.
In a crossover with Hannah Montana, obviously Miley Stewart as Hannah Montana herself. She could be in Seattle for a secret concert and needs iCarly's help to promote it without revealing her identity. It would be fun to see Sam trying to keep Hannah's secret while also being her usual wild self around her.
In a crossover with the Lord of the Rings, Aragorn could be an interesting choice. He could bring his leadership skills and combat expertise to Los Santos. The GTA 5 characters might initially be skeptical of his noble ways, but they could learn from him. He could also help them fight against a new evil force that has emerged in the city, perhaps an ancient and powerful gang with dark magic - like abilities.
If it was a crossover with The Evil Within, Sebastian Castellanos would be a great character to include. His detective skills and his ability to handle the nightmarish creatures in his own game could be useful in the Outlast 2 world. He could team up with the Outlast 2 character to solve the mysteries behind the horror. Also, Pyramid Head from Silent Hill could be a terrifying addition. His presence alone would heighten the sense of dread in the Outlast 2 crossover story.
Definitely Goku. Their previous encounters in the Dragon Ball series make it a natural choice. Their power levels and different fighting styles would create great tension and action in the story.
Well, if you're doing a crossover with '101 Dalmatians', Cruella de Vil could be an interesting addition. She might see the Aristocats as a new target for her fur coats, creating a whole new conflict for the cats to face. And the Dalmatians could be allies of the Aristocats, helping them outwit Cruella.
A crossover with Zelda might also be cool. Picture Shovel Knight in the land of Hyrule, using his shovel to dig up secrets in the dungeons, and perhaps helping Link in his quest. He could even face off against some of Zelda's classic villains alongside Link.
In a crossover with the Avengers, characters like Iron Man and Captain America would be great. Iron Man could be intrigued by the technology of the lightsabers and try to replicate it. Captain America, on the other hand, could admire the Jedi's code of honor and fight alongside them against a common enemy, perhaps Thanos who is also after some powerful Force - like artifacts.
The main character is Shovel Knight, of course. And the evil Enchantress is also a key figure as she is the main antagonist. Shovel Knight is on a mission to stop her. There are also other characters like Shield Knight who has a connection with Shovel Knight. Some of the bosses that Shovel Knight encounters throughout his journey can also be considered important characters as they play significant roles in the challenges he has to face.