Kingdom of Knuffel

You are young as the newest snowflake, old as the first death in the world.

Your life has already spanned many aeons, with hundreds of aeons more to go.

You're at least 500 but probably a lot more

Since you are a being not from the kingdom, or the planet, no one really knows your age. You are so old it escapes even you. But you look and tell people you are in your 20s until it becomes too suspicious that you don't age and move somewhere else.

You're still a child by your specie standards, meaning around 50

You're as old as the first star to shine in the sky but you only look around 20.

You're something around 30

You look to be around 20, but are much older than that

You're 260 but as mermaids age very slowly you only look 18.

You are probably 17.