He's an orphan > basically taking from i believe both the comics and V3D, Lance lived on a colony planet. One day a space pirate raid happened and killed everyone in the small village he lived in except for Lance, he did try to get home when he saw it happen but fire errupted and blocked him from getting back. It kinda turned out to be a good thing because any pirates on the ground completely missed him, almost like the fire had protected him

He was in the adoption system until joining the military > Since he was technically an Earth citizen, he was taken back to Earth to be put in the system, he bounced around homes a lot because of the trouble he'd cause or straight up because people thought he was too broken to be a good kid to care for. Eventually, at 16, the GA offered him a place and a way to get revenge for the raid, so he didn't even hesitate on taking up the offer

He's anti-military > Lance isn't stupid, he was in the system for a long time and because he bounced so often he learned to read people well. He knew the GA was taking advantage of him and his grief but he didn't care as long as he got what he wanted. Unrelated to him though he publicly hates the military because of how unnecessary it is most of the time and because the GG itself is a shit organization

He's part alien > Coming from a colony planet, it's no surprise more than just humans were there to settle. Lance doesn't know what species he's a part of but he knows it was far back enough that the family members he knew about didn't look like anything but human. Though he does have his suspisions even though he never says it out loud because his ear shape looks oh so familiar to one of the alien races he is in contact with a lot

He has a sixth sense > Now Lance doesn't really have tangible evidence of it but it's a hell of a coincidence for his gut to tell him something is wrong and be right about it every single time. Even the force (as cadets) didn't believe it at first until it kept happening, he has debated on opening a psychic stall to get easy cash.

He dyed his hair ginger > In my redesign of him I did give him ginger hair but I've decided to change that. Feeling like he had no control in his life during the 5 years working with Wade, he impulsively dyed his hair ginger. Hunk and Pidge laughed at him but it was pay back for laughing at Pidge's new haircut that made him look even shorter than before

He's a wine mom to the cadets > It's no secret he's tired of the cadets pulling stupid stunts, especially the kind of stunts HE did when he was only a few years older than them. Those kids drive him to alcoholism but goddamn does he worry about and love them a lot. He didn't want to bring the cadets into the fight so early but the only consolation he gets is that there's seasoned superiors to help them out compared to his own team being alone and forced to figure it out themselves

He's an alcoholic and nicotine dependent > Lance would rather not talk about when he started smoking, but he got started drink the same way every other teen who grew up to become an alcoholic did, underage drinking at parties. Eventually, he got so tired of the shit the academy would do to him that he drank and smoke as a release, which started him on his addition for both. Now being back on Arus, he still does both but he's been trying to quit smoking at least, mainly because of Pidge and Allura and now including the cadets. He and Keith still drink a lot together though so that isn't going away soon

He flirts for fun > Lance had originally flirted to hopefully start a relationship with someone or just to get lucky tbh, but eventually he got tired of it. Now he just flirts because he likes the reactions but he never intends to make anything seriously go down. The only people he ever actively flirts with are his team (sans cadets obvs) because they know he doesn't mean it and they even flirt back for the hell of it sometimes

He plays piano > this man SUCKS at every other instrument other than piano, he doesn't know what it is that makes him terrible at it but after he learned piano he's made sure not to get too rusty every once in a while. Sometimes he and Pidge do duets on the grand piano that the castle has in one of its rooms, it's one of their ways of bonding since Pidge is the only other person who knows how to play

Lance has a passion for teaching > He absolutely loves to teach, while working in the garrison as a flight instructor it was one of the few things he actualy enjoyed, the paperwork much less. He discovered this when first training Allura to be a pilot and member of the lion force, his nack for noticing the small things helped guide her to being the force of unruly ocean she is today. This is also the reason he's the cadets main mentor, he knows what to get done and even if the paperwork is boring the cirriculum is fitted to work with him as well

He has a slight pyrokinetic power > This only manifested after the pilots had died in their lions during their comet episode in dotu. The lions themselves had revived each of their pilots and with that, they all became forever tied to each other. A side affect of this is access to some mystical abilities, for Lance he accidentally sets things on fire, legitimately he doesn't know how to control it. Plus if he gets worked up about something, the immediate area around him has its temperature spike. He also has more access to the lions magical abilities but that's kinda unrelated as everyone else has that too.