It could be one of his professors. If Teddy was constantly late to class or not doing his homework, a strict professor like Professor McGonagall might send a Howler to set him straight.
One possible scenario in this fanfiction could be that Teddy shows some unique magical abilities that remind Remus and Tonks of their own magical heritages. Maybe Teddy can transform in a way that combines both werewolf and metamorphmagus traits, which would be a really interesting plot point. It could also explore how Remus and Tonks, who had such a tragic end in the original story, get to experience some happy moments with their son Teddy through the magic of fanfiction.
One great fanfiction could be 'Teddy's Growth' which shows Teddy Lupin's journey through Hogwarts with Harry as a sort of mentor figure. It really delves into their relationship and how Teddy copes with being a werewolf, just like his father. Another one is 'Harry and Teddy's Adventures' where they go on various magical quests together, solving mysteries and facing dark wizards. It's full of action and their bond is beautifully portrayed.
They are popular because Harry has a connection to Teddy through his father, Remus Lupin. Harry can act as a father figure to Teddy, and this relationship has a lot of potential for emotional depth. It's a way to explore the idea of family and mentorship in the wizarding world.
There's a fanfic called 'Teddy Lupin: The Next Generation'. This one delves into Teddy's role in the post - Voldemort wizarding world. It details how he uses his unique abilities, being a Metamorphmagus, to solve various mysteries around Hogwarts. It's full of action and interesting character interactions.
Often, the theme of growing up and finding love is present. Teddy is a character who has a lot of growth potential in the fanfic world. His experiences at Hogwarts or in the wizarding world after Hogwarts could lead him to different kinds of love - romantic, platonic, or love for his community. For example, he might fall in love with a classmate who helps him come to terms with his identity, or he could develop a deep love for the wizarding world that shapes his romantic relationships.
Well, Teddy could learn a great deal about his family's history from the members of the Order. Maybe he'd discover some hidden secrets or untold stories.
Perhaps the Marauders are summoned by some dark force in Teddy's time. Teddy, having heard of their adventures, helps them figure out what's going on. They teach Teddy some of their old - fashioned spells and tricks, while Teddy shows them new ways of magic. Together, they face the dark force and emerge victorious, with the Marauders having to find their way back to their own time.
Well, it could be about Teddy Lupin traveling back in time and meeting his father's friends, the Marauders. Maybe he gets to experience their pranks first - hand and learns some new magical tricks from them.