Megara was sent by Hades to recruit Nessus for his army. In exchange for his service, he wanted her to be his lover, but Meg's refusal only made him more persistent. Thankfully, Hercules showed up and told Nessus to unhand her, however, his command didn't faze him. As soon as Hercules pulled out his sword, Nessus uppercut him and sent him flying away. Looking for his missing sword, Hercules instead found a fish, that screamed in fear when it saw Nessus and jumped away, much to his amusement. Nessus then punched Hercules into a rock. Philoctetes then told Herc to use his head. Not quite understanding what he meant, Herc literally used his head, by headbutting Nessus, sending him flying.
He wasn't done yet and charged towards Hercules, who leaped into battle and clearly outmatched Nessus, beating him down. Hercules even rode him, before he slammed him into a tree. He then turned to Hercules, before being punched into the air. He eventually fell back into the lake and was hit on the head with his four horseshoes. Three of them formed a large lump, while the last one caught around it. Pegasus then approached him, and blew him over with a simple breath, before he stomped on his head.