Morlun is a character that appears in LEGO Spider-Man: The Videogame.
In the distant past, Morlun and his family took part in a battle against the Master Weaver and succeeded in capturing it and using its power to travel between dimensions and hunt all Spider-Totemic avatars.
At some point in the past, Morlun travelled to Earth-616 and hunted a Spider-Totem named Ezekiel Sims, who managed to elude him. Ezekiel would go on to compile research on Morlun and take measures to protect future generations of Spider-Totems, such as Cindy Moon and Peter Parker, explaining the totemic side of their powers, warning them about Morlun, and attempting to take them into protective custody.
After Peter's meeting with Ezekiel, Morlun and his hapless minion Dex subtly began tormenting Peter from the shadows, stalking him and wreaking havoc with his spider-sense. Morlun finally revealed himself when Spider-Man was investigating a fire at the wharf, punching him with what Spider-Man claimed was the hardest punch he had ever felt.Morlun then told Spider-Man that he would eventually kill him, and now that they had made physical contact, he could find Spider-Man wherever he went. Though Spider-Man fought back, Morlun continually regained the upper hand. Peter tried to flee, but Morlun was able to find him easily and resume the fight. Spider-Man finally got away after Morlun burned down the building they were fighting in, but Ezekiel told him it was no use. Morlun would find him once again, and kill him.
Morlun continually attacked Spider-Man over the next few days, endangering the lives of innocent citizens if Peter tried to flee. With Ezekiel's help, Peter managed to briefly escape with a sample of Morlun's blood, which he discovered contained the DNA of every genus in the animal kingdom. Realizing that Morlun's DNA was pure, Peter found a weakness he could exploit.Luring Morlun to a nuclear power plant, Spider-Man injected himself with a dose of radiation that would kill a normal human being, but was only enough to weaken him due to the radiation already in his blood. When Morlun arrived, he prepared to feed, only to be burned instead by the radiation in Peter's blood. Peter explained that he wasn't a pure spider totem as Morlun had guessed due to the spider that bit him having been previously subjected to a dose of radiation, and that while Morlun could feed on the spider, he couldn't digest the radiation.Absorbing the radiation rather than his spider-powers with every punch Peter threw at him, Morlun began to disintegrate, and he pleaded for Spider-Man to spare his life, saying he was merely doing what was necessary for his survival and that it was nothing personal. While Peter debated on whether or not to let a monster like Morlun go, Dex suddenly appeared and shot Morlun, causing him to crumble to dust.