Rose Granger - Weasley could also be a sidekick. She is intelligent like her mother Hermione. In a time - travel scenario, say when they go back to the Goblet of Fire times, she could use her smarts to figure out the complex magical rules and traps. Scorpius, with his knowledge of how things are supposed to turn out, could work with her to change the outcome for the better, like preventing some of the more dangerous tasks from being so deadly.
Even a character like Neville Longbottom from the past could end up as a sidekick. If Scorpius travels back to the Second Wizarding War era, he could meet a young Neville. Neville has his own hidden strength and courage. They could team up to fight against the Death Eaters. Scorpius could give Neville some hints from the future about how to defeat them, and Neville could show Scorpius the real - life struggles of that time.
Perhaps Scorpius travels back to the Triwizard Tournament era. He gets involved in the events and tries to use his knowledge from the future to stop Cedric Diggory's death. He might also find himself in the middle of the mystery surrounding Harry Potter's name being entered into the Goblet of Fire and end up uncovering secrets that were long buried. And he could form an unlikely friendship with a young Hermione Granger.
Her older brother Albus could be her sidekick. They have a close bond and Albus is likely to be curious and adventurous enough to join Lily Luna on her time - traveling escapades. Together, they could face the challenges of different time periods and use their combined knowledge of magic to solve problems.
In a time - travel scenario to the Clone Wars, Anakin could be a natural ally. He and Ahsoka have a strong bond, and he would likely believe her if she told him about time travel. Together, they could face any challenges.
There's also 'Scorpius and the Time - Traveling Spell'. In this one, Scorpius accidentally casts a powerful time - traveling spell. He ends up in the time of the founders of Hogwarts. It's a really interesting read as it shows his attempts to blend in and find a way back home while also getting involved in some of the early magical politics of Hogwarts.
Deidara could be an ally. Since they were partners in the Akatsuki, Deidara might follow Sasori through time, especially if he thought there were new art - worthy explosions to be made in different time periods. Also, Konan could be an ally. Her paper - based abilities and calm demeanor would be useful in different time - travel situations. She could help Sasori blend in or gather information.
His best friend, Boruto, could potentially be an ally. Even if Boruto doesn't physically travel with him, Shikadai could remember Boruto's advice and use it during his adventures. Boruto's positive and adventurous attitude might inspire Shikadai in difficult situations.
Koriand'r, her mother, could also be an ally. Her alien powers and knowledge of different cultures and technologies across the universe could come in handy. She might be able to use her powers to manipulate energy in ways that help with the time travel process or protect Mar'i in a dangerous time period.
One great 'Lily and Scorpius Time Travel Fanfiction' is 'Time's Twist'. It has an interesting plot where they travel back to the Marauder's era and get involved in some hilarious and dangerous adventures. Their interactions with the young versions of their family members are really engaging.
During time travel, they could face many dangerous situations together. For instance, when they are in a past era and are being chased by dark wizards. Having to rely on each other to escape would strengthen their bond.
Gray might find allies in unexpected places. For example, there could be a hermit who has some special knowledge about time and demons. This hermit could help Gray navigate the time - travel aspects and also provide useful information about the demons in that era. Also, some of the villagers who have had their own experiences with demons might offer their support to Gray. They could provide shelter, food, and information about local demon activity.