1. What is Castaway Barnacles AU?

Well, it's a AU by Toons where the octonauts were separated by a massive wave which cause Kwazii and Barnacles to be separated from the rest.

2. Where did they go?

It is unknown of where the rest of the octonauts are, possibly still in the octopod, searching for them. Barnacles is in a abandoned island without anyone while Kwazii is with Calico Jack.

3. Can my oc join

Of course since it's a rp but you gotta think of what you're doing and if you are separated.

4. Password to enter: Your favourite character and why