One-Punch Man may have an overpowered hero as the main character, but that doesn't mean its villains are something to scoff at. The Monster Association was on equal grounds, if not greater than its heroic counterpart. Its members were strong enough to give the heroes a run for their money, especially its executives. Their emergence on the surface and wreaking total havoc is the perfect proof of this. However, most of them still faced their ends during that event. Here's how the strongest members of the Monster Association met their end.
Gums
Gums was an executive of Monster Association. It had a human-like physique, but its body expanded depending on what it ate and the only facial feature it had was a huge mouth devoid of lips. Gums was an extremely gluttonous monster that ate and digested anything and everything it could put in its gigantic mouth. It also had a tendency to get furious when its mealtime is interrupted, such as when President Ugly's punch made it vomit Genos. This became the reason it met its end.
Gums got angry that its food got away when President Ugly's attack was reflected by Bang and hit him. It took it as a personal attack and devoured its ally. President Ugly managed to escape by ripping the glutton into two, killing it in the process. However, President Ugly didn't emerge unscathed.
President Ugly
President Ugly was an Ugmon, a monster that was once an ugly human, and also an executive of the Monster Association. He was a grotesquely bloated man with a cone head and bulging belly. He had intense self-hatred, which was the reason he became a monster and had special hate towards good-looking opponents. He was strong enough to handle the top A-Class hero, Sweet Mask, without the latter even putting up a fight. He almost died when Gums swallowed him whole, but it became proof of his strength as he ripped Gums into two. He emerged as a vomit-covered, half-digested version of himself. That's how he transformed and became Barf President Ugly, giving him a layer of digestive protection.
After realizing that he was no match against Platinum Spermatozoon or The Homeless Emperor, he decided to part ways with them vowing to get back at them in the future. That's when he discovered the recently finished match between Bang and Garo. He was about to deal the final blow on the then unconscious Bang when Garo woke up and kicked a hole through his stomach. A few moments later, Barf President Ugly's entire body melted.
The Homeless Emperor
Despite being an executive of the Monster Association, The Homeless Emperor was visibly human. He was once a typical employee who became homeless after being accused of sexual harassment. After observing the sky, he gained a weird new insight into the world and realized how much humanity strayed from its path. He thought that the only solution to free himself from such society was to commit suicide, and that's when he met God and gained his light powers. He then took it as his divine mission to exterminate humanity.
The Homeless Emperor's light powers were nearly overpowered, but he wavered and admitted his weakness during King's nervous speech. He thought that the known strongest hero had discovered that he was nothing more than a human without his light powers. This gave Zombieman an opportunity to strike as The Homeless Emperor prepared to silence King. Zombieman started interrogating him and when he started to fess up, God appeared in front of him again and disintegrated the life out of him.
The Monster Association's might is undeniable, but it is almost already exterminated. The only remaining living executives are Black Spermatozoon and Evil Mineral Water, and even they may meet their demise soon as Garo regained his consciousness and Saitama is also surfacing. As for Psychos and Orochi's fusion, it is still unknown if Tatsumaki's final blow managed to obliterate them. Fans will have to stay tuned for future updates of One-Punch Man to confirm their deaths.
