Lance was a friend of Bud Williams and when Bud said he was unable to bring Irma to the prom because his car didn't start, he immediately offered to accompany Irma to the prom as he could not accompany them both because his car only had two places, but Bud's other friend Don offered to repair Bud's car and only if he couldn't do it would he accompany Irma to the prom.
Lance was a prison guard in a New York prison and when Thor showed up to interrogate a prisoner Lance told him he had to leave his hammer but his colleague Bill told him to leave it alone so no one would be able to lift it.
Lane was one of two truck drivers who transported the weapons seized in police actions to be decommissioned, but in fact they delivered them to Sheriff Cole to be able to exchange with the Calavera's heroine.
He brought his newborn son to his father to introduce him to him and when his father said he was heartbroken for not being able to give anything to his nephew except his love, his son replied that this was the best gift he could give him.
After escaping the Trustees' lime pit, the Blaze was held at gunpoint by Lara. Lara then showed the Blaze the Trustees' power by using a special hate ray to force Borsia's greatest speaker to break out into an anti-Gratzia tirade.
Lara later returned the Blaze to the Trustee's castle hideout. After two attempts to kill the Blaze failed, the Blaze tossed Dr. Vortex into the Trustees' lime pit to die. Without their leader, the group fell apart.
Larissa was a human that was integrated into the Phalanx collective. She and other members of the Falange collective were sent by Cameron Hodge to clash with the X-Men but were defeated and perished in the fight.
Larry was a passerby from whom Astrid Bloom read the mind to discover that he was a paranoid schizophrenic who was convinced that his bird was cheating on him with his best friend and that the world would end next week.
Lars was one of the boys bullied and lured by an internet subterfuge by the Dark Beast and transformed into a Lizard-like being and then placed in the service of Dark Beast to catch other boys to experiment on.
It was revealed that Lars was the victim of a car accident and was consequently mutilated in his arms and legs. Dark Beast used a variant of Connors' serum on him, transforming him into a lizard-like creature.
After Emma Frost and Spider-Man escape, Dark Beast orders Lars to check equipment that could have been damaged during the fight. Shortly thereafter, he struck Emma Frost from behind as she was destroying Dark Beast's equipment, but was quickly defeated by the Lizard.
Laura and her sister Agnes were visited by Mr. Cotton from the Welfare Bureau after receiving complaints about the smell and filth of the house. He threatened to call an exterminator on the rats and attempted to kill one himself, one named Caesar, who attacked and bit him back. After he killed the rat, the women were distraught and lead him to their clean cellar where they chained up Mr Cotton and fed him to the rest of the rats. 
Lauria lived in the monastery where an unidentified woman left a trio of Hellbent infants, who would be known as the Cadre. Lauria helped Gregori supervise the children, until, like the rest of the Knights Templar, she was slaughtered by the hellbents sent by Seth.
Laurie was Harlan Ryker's secretary at Cybertek. When Michael Collins showed up at Ryker's office, Laurie told him that Mr. Ryker was busy with Ben Jacobs in a weapons test and could not be disturbed.
A few days later Laurie warns Mr. Ryker in his office that Mr. Cross had arrived to meet him.
Later, Laurie warns via video, Mr. Ryker that there is Mr. Burr to see him
Lawrence was one of the bouncers at the Eastern Promise, the club owned by Sergey Bulovic. Lawrence usually abused of the girls that wanted to become dancers in the club, until Silver Sable beat him while she infiltrated into the club.
Professor Lawson was a crazed scientist who invented a ray capable of devolving people by restructuring their genetic structure by matching them with a distant ancestor of whom they kept traces in their DNA. He assaulted the campus where he taught and did research, accusing the Chancellor of having never understood his work, he but was opposed and defeated by Marvel Boy.
Leez and her friend were travelling to New Orleans during a school break when they met Gambit and asked for directions. During the conversation something exploded and Gambit was attacked by Assassins Guild. Her freind wanted to drive out there but Leez was fascinated by the battle.
In the 19th century, The Leftenant worked with the Ingolstadt jail when several prisoners disappeared. He tried to get Colonel Blackstone to open an investigation but he refused to so the Leftenant began investigating himself. On his way to Castle Frankenstein, he ran into Frankenstein's Monster which the Leftenant attacked but was knocked out. Later, after recovering he found the monster chained up being held prisoner by the Colonel who was killing the prisoners and turning them into his mindless slaves using a Giant Spider. He fought the Colonel but was seemingly losing when the chamber began flooding and the spider escaped. The Leftenant fled begging the Colonel to flee too instead of dying. His fate after the castle crumbled is unknown.
Mr. Leiberthal was the prosecutor in the trial brought against the Red Skull for his war crimes.
During the trial, Leiberthal was taken hostage by Crossbones and released from the fake bioplastoid Avengers created by Arnim Zola.
Lenny was one of the best Taskmaster students and was hired with others for a sparring partner session dressed as Captain America. The opponent turned out to be the Red Skull who killed Lenny and the other sparring partners in an extremely simple way.
Leo was an agent of the Shadow Consortium, tasked with hijacking and retrieving a secret United States defense surveillance satellite. He was confronted by Nova, who convinced him and his partner Herb to surrender, but died in the explosion of the ship he was travelling in.
Lila was an assistant to Jeremy Briggs. When the students of the Avengers Academy visited Briggs at his headquarters, out of enthusiasm Briggs ordered Lila to bring various refreshments for all of them and to cancel any appointments he had previously scheduled for that hour.
Lisa was one of the friends of Nate who, following the passage of a destructive tornado in Redfield, asked to Captain America if he wanted to go with them to see if there was still someone to help.
Lola was Blackie Ross's girlfriend and an accomplice in his car racing racket.
She tricked the Human Torch into the trap but was later captured by the Torch in Auson City and turned over to the authorities.
Lorraine was the wife of Musenda, who was attacked by a vampire that created a symbiotic link between them that caused Lorraine to become a vampire during the daytime. The root of the symbiosis was discovered by Rachel van Helsing. The vampire was eventually killed by Blade, restoring Lorraine to normal.
Lou was a butler working at the Hellfire Club, first seen welcoming Storm and Colossus when they arrived incognito. He later chatted with one of the maids, Mary, and reminded her to give special attention to the host and presidential candidate Robert Kelly while delivering a tray of drinks.
Lou was the clerk of the hotel where Emma Frost resided and threatened to kick her out if she didn't pay the rent, but to make up for her missed payments he made very heavy advances but for which Emma refused using her powers to drive him away.
Louise was Skinner's wife, unbeknownst to her a member of the demonic race of Lilin. When Skinner's mother, Lilith, requested his services, Skinner killed Louise and their baby son before following her.
Years later, Skinner revealed to Michael Badilino that he had suppressed his familiar to prevent Lilith from torturing Louise before killing her and to avoid bringing the demon out of his son, as he was of the same blood as theirs.
During the assault on the Nightguard base by the vampires due to the betrayal of their lead priest, Louise, one of the members of Nightguard, was transformed into a vampire but fought against the transformation by inoculating him with holy water and continuing to fight the vampires.
Lucas was the brother of Julian, a young mutant native, who during the robbery attempt by the sheriff's son against their grandmother, Lucas intervened and was punched, bringing in Julian who used his mutant powers.