not really, although there are a few in a rp I own (hasn’t started yet tho)
sometimes? Idk lol, as long as you don’t portray them as useless characters that can’t to anything except be happy, scared or cute lol - cus they are rarely any of these. Most children lack a sense of fear
like i said above - children are not all scaredy-cats. Majority of them are stupidly brave and as long as they aren’t overwhelmed, they will do just about anything they set their mind on.
as well as that, most of them are annoying, random, loud and chatterboxes - not the most endearing 