Randice & Wavey = Daniel "Rainer" Hammond.

Both are males from the description. They are reliant upon each other. Together they form a unit. One that Randice probably needs but doesn't want to rely on. A cloud over your head, following you around can drown out your happiness and life. A person in a depressive state. With his brother's death, his uncovering of dark family secrets and no one seems to listen to him to the point he takes matters into his own hands with this game and his eventual suicide; All of these point to Rainer being represented here. His own view of himself. Carrying a great weight but wanting to do good. Wavey's description mentions fearing "freezing" which may be a nod to his game development and the game crashing. Rainer writing the descriptions while struggling with depression may account for his line "I can't remember what birds look like anymore" from Toneth's description. He's staying inside, working on the game, in a depressive state of mind.

Toneth = Michael Hammond.

Mike is fond of painting. Toneth is connected to the painting puzzle. Mike died, Toneth was removed from the game. Mike may have been the one hit by the car, causing his death, according to Roneth's description and the dog allegory.

Roneth = Paul Leskowitz

Paul Is The Third Brother

Amber = Care

Care being a name and a protective word ties with Amber's description of finding a safe place (take Care). Care's egg is placed in a locker with a reference to Amber's description. Reference to her home not being a good place at the moment with her parents going through a separation. She's behind a cage, Care is locked in the basement. Possibly hides in her cupboard when her parents argue. Is protected by a motion sensor (or some kind of alarm equipment) in her bedroom. She is heavy, I don't think is literal but rather "has a lot baggage".

Pen = Anna

If Rainer wrote these and tried to tell people about Marvin or just wanted to help with the domestic squabbles in the Mark household (we know he helped re-paint the house) then it's possible that he wasn't being listened to. So this might be a nod to someone who just isn't listening to reason. Pen was designed with a musical puzzle before the description was written based on the "don't know what's she's doing here". So to say she is deaf is a silly thing to do unless he was making a point. I think that quote could also be a jab at Anna for not knowing how to handle situations correctly. The most crucial thing is that she is an aspiring mathematician or... coder. She even wrote a message in the game for Mike. Being around Rainer, she may have taken an invested interest in his work. She may be the one speaking to the resurrected Care in the game.

Care A, B, NLM

They are Care but were added after the fact. No need for interpretation.

HUDSON!

He's Marvin. The reason he never appears is because Rainer shifted gears and designed the rest of the game for Marvin, he would take his own position in the game. Honestly, it's a grumpy looking piece of bile yellow crap with a phallus appendage. It's what Rainer thinks of Marvin.

Well there you go. Even if you don't agree, maybe something here connects some more dots for you and your own opinions on the matter. I resisted the idea that they were caricatures for a long time but as with most of my theories something clicked and set off a chain of investigation. Tell me what you think and your own interpretations. Thanks.