i find leo to be a really stupid character, to be honest. he's my least favourite.

^ Well he was able to do math adults couldn't do at a young age. He also make a helicopter out of pie cleaners and make it stay in air. He has also used his brain more than weapons to stay alive. Yes, he does joke around a lot but that doesn't make him stupid. I think you're referring to a stereotypical comic relief. People can joke and be smart but hey it's your opinion.

Hades yes.