Larry is strong-willed and laid back at times. He appears to get along with others easily but isn't afraid to stand up for what he believes in. He also appears to care a lot for his friends (an example being him threatening to hurt others to protect Sal).
Larry has dark brown hair along with a yellow-toned tan skin. He also has dark colored eyes which seems to always rest as a neutral state, unless Larry himself is experiencing strong emotions. He has a mole under his right eye. He is typically seen with his light-mid beige shirt that has the "SF" logo on it accompanied with blue jeans with a chain on the left side and black shoes, when he's outside he wears a red hoodie.
Prior to the events of Episode 1, Larry Johnson is the firstborn son and only child of Jim and Lisa Johnson. He led a relatively charmed and peaceful life in Addison Apartments and was especially close with his father, developing a shared taste in Heavy Metal and an above average sense of curiosity.
Life took a turn for Larry when he played with firecrackers against his parents' wishes and accidentally killed Mrs. Gibson's pet rabbit. The same night, he encountered a Red-Eyed Demon, who reached out and touched the boy. From there, things got bad. His father disappeared the next day, the firecracker incident put him in juvie for two weeks and caused him to miss enough classes to attend summer school, and his bike got stolen. This series of unfortunate events led Larry to believe he'd been cursed.
Larry proceeded to take everything his father owned and hide it from his mother in his treehouse, hoping that one day he would return.
Moments before Sal Fisher's arrival, he was cleaning Sandy Sanderson's toilet until Charley Mansfield burst through the door and slit the woman's throat. Frozen by fear, Larry waited until the murderer left to flee to his basement room.
The arrival of Sal Fisher
Larry becomes fast friends with Sal when the latter is introduced by the former's mother. They bond over Sanity's Fall and art. When the murder of Sanderson is brought up, Larry confides in Sal what he had witnessed. Sal agrees to help, and the two devise a plan to put Charley behind bars.
Larry fakes a robbery to lure the policeman and detective away from Room 403 to allow Sal inside. When Sal reports a missing space between two Glitter Ponies Larry calls him back to the basement. After providing Sal with the bag Larry is confronted by his dark secret. Larry calmly refuses to tell Sal anything as they had just met.
A Dark Secret
A few months after the arrest of Charley Mansfield, Larry lends a comforting ear to Sal's nightmares and decided he could trust Sal with the story of his "curse". When Sal offers to help get rid of Larry's curse, he is weary but accepts the offer all the same.
After going inside, Larry stays to watch over his mother. When Lisa fall asleep from the cold medicine, Sal asks Larry to accompany him to the restroom of Room 504 to meet the ghost of Megan Holmes. Larry complies, but Megan doesn't show up, prompting him to refer Sal to the resident brainiac and supernatural believer Todd Morrison.
After conferring with Todd, Sal asks Larry for his police scanner antennae. He reluctantly surrenders it.
After the Super Gear Boy is completed and Megan's Necklace was retrieved, Larry, once again, accompanies Sal to Room 504. This time Megan appears, much to Larry's shock; a feeling that intensifies when he learns that his father was friends with Megan's dad, Luke Holmes. After Megan is scared off by the Red-Eyes, Sal and Larry agree that the room warrants further investigation. Larry returns to his room after directing Sal to David's Room 302 for a crowbar.
When shown his father's "computer chip" he tells Sal that it seemed familiar, but when the chip becomes a Rubix Cube he doesn't acknowledge or recall its previous state.
While Sal investigated the hole in Room 504, Larry visited Todd to retrieve a device intended to ward off malevolent spirits, a device that he later used on Red-Eyes before it could attack Sal. It soon became clear to Larry that Red-Eyes was around before he was born and that his father didn't disappear, he abandoned his wife and son.
The Bologna Incident
On Bologna Day, Larry took note of how the Bologna tasted funnier than normal and agreed to help Sal investigate the origin of the lunchmeat. He and Sal asked the lunch lady Kim Yazzie about the origins of the bologna they got coldly turned away, causing them to seek alternative solutions in the form of Kim's records.
Sal provided a distraction while Larry snuck into the Teacher's Lounge to take a picture of Kim's file. After successfully completing his task, Larry met up with Todd and Ashley in the labs.
Larry later helps Sal break into Mrs. Packerton's classroom desk to look for evidence about the bologna. Sal retrieves a piece similar to Jim Johnson's puzzle box and the two left.
Investigating Room 201
Larry helps Sal break into Packerton's apartment and unlock the refrigerator to find the severed head of a goat, making Larry pleased that his guess about the bologna being goat meat was accurate.
When Sal meets Mr. Packerton in a vegetative state he overhears the spirit's pleas to be euthanized. Larry will fulfill this request if Sal refuses to. The sound of someone entering the room forces Larry and Sal into hiding, the former making an effort to shield the latter, but the newcomer was just Ashley. During their brief period in hiding, Larry found a keyring for the other locked room.
When the blood stained footlocker refrigerator is opened to reveal the deboned flesh of the missing students at Nocksfell High, Larry vomits twice but is nevertheless satisfied that the origin of the bologna had been solved.
Before they could leave Ashley discovers (and falls down) a hidden trash chute behind a painting of a farm. Larry is thrown into a state of panic and swiftly goes with Sal to retrieve Todd and visit the basement.
The Cult's Temple
The trio enter a room hidden behind the Lost and Found shelves. After descending a hidden staircase, they find themselves in the temple of The Devourers of God. Larry accompanies Sal through the maze of doorways while Todd remained behind to keep the entrance open.
Much to Sal and Larry's relief, they find Ashley alive atop a pile of bones from the Cult's victims. After safely extracting her from the temple, Larry proposes that they should kill Packerton so she can't hurt anyone else. Todd and Ashley agree, but Sal protests, insisting that they sleep on the decision. The decision is made for them, however, when Mrs. Packerton was killed in a drunk driving accident.
The Sally Face Killer
Larry and Sal had parted ways after high school and it is unclear what caused his demise.
When Dr. Enon visits Larry's tree house to honor Sal's request, the boy's ghost appears to greet him and begs for help. He only succeeds in scaring Enon and accidentally causing him to plummet to his death.
- Larry might be Spanish, because his mother surname is García (Episode 3, journal) and in an interview, the Dev said "I think Larry would wanna go to Spain, because he has family over there". 
- Larry's birthstone is moonstone
- Since Larry was born in June 7, he is a Leo.
- In the end of Episode 2, it revealed that Larry is dead but the cause of his death hasn't been revealed yet.
- In Episode 3, he was revealed to have a deceased baby sister that was stillborn
- Larry is the first character to see Sal's face without his prosthetic and he knows what happened to Sal (his parents don't count) 
- He is also the second of two characters in the game whom it's possible to play during Episode 3, the other being Dr. Enon during Episode 2.
- During an interview, Steve Gabry, the developer of "Sally Face", stated that Larry would probably like watermelon the most.
- Larry's favorite hobby is drawing.