I don't why every time I add images to the episodes, it changes the main profile image for the anime page.
I always going to use this one because it has Wendy and her cat (who does not acknowledge Happy's love) 
:)

Yeah i don't know why that happens either (its such a nuisance but w/e). i always have to change the main profile image. And yeah I always use this pic as well. It kinda represents the anime pretty well right now since wendy and charle just joined the guild. And i'm sure that charle will embrace Happy's love one day ;)