Welcome to the Guild,
@Kyandaboy.
You don't need to claim characters on here and Roleplays vary from topic to topic or section to section. I take it that you're looking for a Percy Jackson-estque Roleplay which you might be able to find
here,
here, or
here. I've noticed that similar Roleplays tend to appear in these sections from time to time. If you have any questions while scrolling about in the meantime, however, then please don't hesitate to drop me a DM or stop by the site's Discord to strike up conversation with the website's Staff. You can also find some helpful guides
here or further implore questions
here.
I think that's about it from me, but I hope to see you around and I hope that you are able to find a Roleplay that suits your tastes.