I got a fanfic that would include Sunny as a sUper important main character in Part III(Izzy is the second most important). Currently only Part I is posted tho. I cOUld post part I, but thAt has no sunny.
Although, part III wouldn't make sense without part I
Heres a link
https://www.fimfiction.net/story/502093/the-iron-guard-part-i