Twelve Olympians
Hephaestus (Voice actor: Kim Kwan-jin): The blacksmith who always makes things in his own studio. He is the dullest and ugliest of the Twelve Olympians. He has a limp and a bad hip and knee joint because he works sitting down. However, he tends to focus on making it with a good smile. He is good at craftsmanship, so he produces results meticulously and perfectly, so he is smart.