Note: usually wears a black mask over his eyes. If removed, his eyes are blue with a red tinge to the irises' edges.

Gender: Male
Age: Unknown (Around late 20s to somewhere in the 30s?)
Series: Mario, specifically Super Paper Mario
Species: Human
Role/Occupation: Scumbag Thief. He doesn't really contribute to the village but since it's where he sleeps most nights he does have some interest in keeping the "Pit of 100 Trials"-wannabes at bay.

Skills:
Extended jumping; below-average run-speed
Acrobatics
Totemic Magic: Can tap into the natural energies of various items to bring out a special ability related to their appearance. Not all items can have such an effect and generally he cannot use more than one "Power Up" (size-based powers aside).
Thunderhand: While he does not remember how he gained this power, L has some natural skill with electrical magic.
Flip Dimensional Magic: As part of job training, Mr L was taught how to manifest Flip-Boxes to slip between dimensions (ex: hiding from sight of the third spatial dimension) and across dimensions (ex: jumping from one reality to another). For some reason this power consistently fails to work.
Robot/Mech Engineering
Plumbing *Doesn't actively remember.
Repair (Machine)
Thievery *Not as great without Dimensional Magic

Home:
He's taken over a house off the main road of town. He's also built a few small tree houses out in the forest and a hideyhole in town. L tends to keep to himself, not really trusting anyone else with his place (not that they'd dare he thinks). The door has an astonishingly complex locking system on every door and window. One room is full of books and scrap paper. One has a crude forge and the beginnings of a some strange statue or oversized armor. The kitchen is clean and well stocked. The bedroom is like a magpie's nest. A clear path leading to the bed but the walls are lined with shelving for all kinds of junk.

Personality:
Brash with an ego the size of his old mechanical robot-mech, L doesn't care about rules and focuses on what he wants. Usually this is other people's stuff. He doesn't dwell much on the past or the future instead focusing on the present. He is deeply loyal to only three people: himself, Count Bleck, and Miss Nastasia. As far as L is concerned everyone else is either a mark, a prick, or someone to hit on. He's still a bit butt-hurt that Dimentio tried to kill him so he gets a bit irritable regarding Jesters or Harlequins.

(True Personality:
A bit shy and timid but when the going gets tough he shows he is braver than he knows. He would like being acknowledged for his good work. That his brother gets all or most of the accolades frustrates him from time to time but Luigi knows that Mario usually doesn't mean for it to happen. It still bothers him when people fail to remember his name, what he looks like, or even that he exists.)

Backstory:
Mr L's memories prior to his job interview with Nastasia for Count Bleck's organization are... fuzzy. It did not matter as he had to focus on the job. Steal these "Pure Heart" things, prove himself to be the greatest thief in multiverse, and then he could walk away with a big fat paycheck. Just before arriving in this dinky town the last thing L remembers is Dimentio pulling a dirty finkrat trick and trying to blow him to smithereens. He'll have his revenge if its the last thing he does!

Life in the Town:
Mr L was hardly around at first. He thought it was a trick or a trap, that Dimentio was gonna spring up and try to kill him again. He lowered his guard after a few weeks of nada. As Mr L is a thief, a few objects have disappeared every time he paid visit to town. This usually was food, scrap-metal, some tools, and rarely medical supplies. Sometimes he swiped books from the library when the Goomba wasn't looking and most of the time the books reappeared misshelved.

Mr L likely crossed paths with Sans a few times. If he was ever caught in the act of stealing something, any apologies were undoubtedly insincere. He'd view Sans as a bit of a pushover and something about "Mr Short And Blue Dry Bone Knockoff" rubs him the wrong way. So Mr L may have pilfered every food item in Sans's house. Once. This resulted in one of the few times he paid for the village doctor's services.
If Goombella ever saw Mr L and recognized him as Mario's brother, Mr L denied any relations to "Mr Jumps Way Too Much For A Fat Guy" and likely started stealing books from the library out of a twisted sense of revenge for the 'slight'.
Amethyst, having a home extremely cluttered, had one of the few places he'd ever break into. For reasons unknown to him, Mr L is disgusted with how much of a mess she made.

Prized Possession:
A blueprint for a robot battle mech. Clipped to one corner is a photograph of a group of people sitting around a table. There is a strange gentleman dressed in white holding a diamond-tipped cane; a short woman with thick red glasses dressed in a white blouse and black skirt; a massive burly bearded man in a leather chestplate and gauntlets with a kilt; a young girl with green pigtails wearing a green dress and a tan cowboy hat; Mr L; and a jester clad in yellow and purple with three large bells hanging on his hat, there is a black bodysuit, pointed shoes, and gloves poking out from the cape, a black-and-pale-purple "Comedy" mask hides his face.