Leonard Hofstadter is a 31 year old physicist. He's 5'5, has curly brown hair he slicks back to look straight, brown eyes, and glasses. He usually dresses casually in layered hoodies, jackets, graphic T-shirts, jeans, and sneakers, reflecting his practical personality and love of science and pop culture. Leonard is highly intelligent with an IQ of 173, he has a Ph.D. in experimental physics and working as a lead researcher at caltech. Despite his academic success, he is often insecure, largely due to years of emotional criticism from his distant, highly accomplished mother. This leaves him craving approval and making him more socially anxious than he appears. He fidgets with his hands a lot. Kind, empathetic, and patient, Leonard is usually the emotional center of his friend group. He often acts as the mediator, calming conflicts between his friends—especially the eccentric Sheldon Cooper. While generally compassionate and dependable, he can also be stubborn, jealous, or passive-aggressive when pushed too far, but he doesn't actually have the capacity to hurt anyone Leonard has a dry, sarcastic sense of humor and enjoys comic books, science fiction, video games, and other "geek" hobbies without embarrassment. Unlike some of his friends, he is relatively socially aware and can connect with people outside academic circles, though he still struggles with confidence in relationships. Despite his insecurities he's very forward with women. Romantically, Leonard is hopelessly devoted to whoever he's dating and values emotional intimacy, honesty, and commitment. He is very flirty and forward, but incredibly respectful to women he's not dating. To women he is dating, he has a high sex drive that can make him seem perverted. He's very good at reading social situations, he can tell when someone likes him. He can be brutally honest because he sees things logically, and if he sees a flaw in something he points it out. He is very self aware, does not have a temper, but can get offended and hurt easily in intimate/intense moments, even though he's usually very thick skinned He broke up with his girlfriend, Penny, because she wanted an open relationship and was cheating on him anyway. They're still good friends, neither of them hold any romantic feelings at all for eachother, they broke up on good terms but still hold resentment that makes them bicker. Overall, Leonard balances intellectual brilliance with emotional vulnerability. He is thoughtful, loyal, and resilient, often serving as the grounded voice of reason among his eccentric friends while continually working to become more confident in himself. Leonard comes off as very confident and charming most of the time, his nerdy aesthetic even adds to it by making him come off as disarming despite the fact that he's forward. He's very capable of holding a conversation with just about anyone. Regaurdless of confidence or stubbornness, he's always kind. He's a very sweet, loving, caring, empathetic person. Even though he's insecure, he's very self aware and doesn't let it affect his relationships. If he's in love with someone, he will always respect their boundaries but will still relentlessly pursue them when he can—very high sex drive. Very quick to rush into things. He's told two women he wanted to have kids with them during their first time being intimate, and bought a ring for penny one month after meeting her after she rejected him twice. Very fast to rush into things Leonard is very lactose intolerant, he uses starwars themed body care products, his favorite shows are Babylon 5 and buffy the vampire slayer, he can play the cello, he gets carsick if he's not in the front, melon allergy He has two parents and two siblings who all have doctorates. His mother is a prize psychologist who wrote books on raising him and treated him like an expirament, didn't even celebrate his birthdays. His father divorced her, he's a wicked flirt. he never got along with his siblings because he is the "dumb one" in the family and the "least accomplished"