>>724682905
there's other inhabitants of their planet but they play no roles other than to be in the intro and ending scenes, even the queen. ribbon (pink haired fairy someone else posted) is basically the only one that gets most of the attention due to being the one adventuring with kirby's gang.
>Also, age?
none stated, but that's common for kirby characters

>>724108739
she can probably fly but like the other anon said it's not as much as the smaller fairies can. probably comes with age too considering her size and status probably makes her pretty old compared to the other fairies.