Thoma Avenir from the Magical Nanoha series, hey, let's pick up a franchise about magical girls fighting to save the world or multiverse and replace them with a literal random guy for Nanoha Force, this guy never appeared or was mentioned before but he is best friends with and beloved like a brother by popular franchise characters who really should have mentioned him before if he was that important to their lives, have him be a bit generic, also, let's give him the best weapons and have every bad guy obsessed with him and want him to join their side because everyone so loves Thoma, even the bad guys want him!
While we're at it, let's make it so that the villains are anti-magic to a point where MAGIC IN A MAGICAL GIRL FRANCHISE is completely useless, what, people watching a franchise that always used magic to fight before want to see magic being used!?
The hell kind of thing are you saying, sure, the third season introduced anti-magic but it didn't freaking make magic completely useless, it's just so that the old cast suddenly becomes useless and has to spend time training with new stuff but don't worry, Thoma who everyone likes gets into anti-magic combat really quick!
He has some fans, but mostly people who like cool powerful heroes that can do stuff while others can't, overall, he was so hated and really the series in general that Nanoha Force entered hiatus in 2013 and still has to come back, it actually seems to have killed the franchise, there were attempts at making some new movies and manga but nothing that got big like the first few series, and all of those completely ignored Thoma and any Force character or element.