Leon Kennedy could also be an ally. He has his own set of skills and experiences in dealing with dangerous situations. In a time - travel scenario, Leon might be able to provide different perspectives and resources. For example, if Chris travels to a time where Leon has already been, Leon could give him valuable information about the local threats and how to deal with them.
One potential new ally could be a powerful pirate from the past. For instance, a pirate who was known for his great navigation skills. Luffy could use his help to explore uncharted seas more easily.
When Madara travels through time, he might find allies in unexpected places. For instance, some of the minor ninja clans that were oppressed by the larger clans in the past could see Madara as a liberator if he offers them a better future. On the other hand, those who benefit from the current ninja world order, such as the Daimyo or certain powerful shinobi from other villages, might see Madara as a threat and become his enemies.
Another plot could be that Chris gets sent to the future by accident. In the future, the world is completely overrun by the creatures from the bio - horror universe. He then has to find a way to travel back to his own time while also gathering knowledge about how to defeat these future threats in his present. For example, he might discover new weapons or weaknesses of the enemies.
Maybe Kurama, the nine - tailed fox inside Naruto, could be an unexpected ally in a new way. Since they have a bond, Kurama could provide Naruto with extra power and insights when dealing with time - related challenges. For example, Kurama might have some ancient knowledge about the flow of time that could help Naruto in his time - patrolling duties.
In Adventure Time fanfiction, the Ice Princess could find allies in many characters. Lady Rainicorn could be one. Her flying abilities and combat skills could be very useful for the Ice Princess. BMO could also be an unexpected ally. BMO might have some knowledge or technology that could assist the Ice Princess in her adventure. Additionally, Flame Princess could be an ally under certain circumstances. If there is a threat that endangers both the Ice Kingdom and the Fire Kingdom, they could put aside their differences and work together.
His first potential ally could be the Lich. Since the Lich is all about destruction and chaos, just like Evil Finn in his evil state, they might team up. The Lich could provide some dark magic knowledge to Evil Finn to make him even more powerful.
The Fire Kingdom's Flame Princess could be an ally too. Her mastery over fire could complement Finn's powers in combat situations. Also, the various magical creatures in Ooo, like the gnomes or the fairies, could band together and support Finn. They might have their own ancient knowledge or magic that could be useful to Finn in his adventures with his godlike powers. Finn's kindness towards them in the past might make them more inclined to help him out.
Obviously, Alfred is a key ally. He has all that knowledge about Batman's operations and can be a great support to the reborn character. Commissioner Gordon is also an important one. His connection to the police force can be very useful for the reborn Batman in fighting crime.
One potential ally could be a wise old wizard from a magical dimension. They might have vast knowledge of the multiverse and help Robin navigate through different dimensions. Another could be a street - smart thief from a dystopian dimension. The thief's skills in sneaking around and getting out of tight spots could come in handy. And a friendly alien from a technologically advanced dimension could also be an ally, providing Robin with advanced gadgets and knowledge about different technologies.
Finn and Jake are obvious allies. They are always up for an adventure and helping those in need. Their bravery and unique skills would be very useful.