1) To everyone asking about the moustache; it was drawn that way for censorship reasons.
2) Captain Planet was barely affected by his hate. All it did was make him wince a little like he had a headache. Seconds later he effortlessly flew an H-bomb into space and hurled it a safe distance away before it blew. He even commented "I wasn't prepared for the level of hatred radiating from that monster" meaning if he'd had a chance to ready himself it wouldn't even have managed that.
Captain Planet is a supernatural hero and couldn't even get near Hitler, yet Captain America, who is more of a super soldier, started off his comic books by showing him socking the fuhrer in the face on the first issue.