Error was born March 6th of 2003, being canonically 23.
He is plus-size.
Error used to hate thunderstorms, but now loves them because they remind him of Jay.
Error grew up in a rural part of Reading, Pennsylvania.
Error is polyamorous and gay.
He has BPD, ADHD and is rumored to have been misdiagnosed with autism most likely. He also has C-PTSD.
Error having ADHD explains why his upload schedule is inconsistent.
Error is canonically a drug addict and vapes as a way to cope with his trauma.
Error is a branch of a dormant yandere people dubbed the Error yandere. These types of yanderes typically tend to show slight yandere tendencies before being in a relationship, but it's often mistaken as love over a person or just basic obsession. The same is applied for crushes/love interests at times but it depends on the closeness the person has with the love interest. Once in a relationship with said person, immediately right off the bat the person enters yandere mode, going full possessive and obsessive over the person. However there is a twist. Instead of killing for the person, the person would literally kill only when needed such as for defending the person or protecting them. While some see this as "normal" behavior, this is in fact not and is purely yandere behavior due to the stated reasons before. Also, these types of yanderes are often mixed with tsunderes or derederes, sometimes both. Error falls into both the tsundere and deredere category. They also happen to be extremely introverted most of the time and usually have a personality type of ISFP-T.
Since being on testosterone, Error said that his cravings for meat have gone up, which is odd since most meats he usually wouldn't eat, like steak and porkchops. Yet, he often finds himself craving these foods and eating them. (Most likely due to dog instincts.) Usually these foods can also be eaten raw.
Error has both the instincts of a shark and dog at times.
Error hates being perceived as feminine in any degree. Wearing pink or doing anything feminine sets him off and triggers his dysphoria. Painting his nails, wearing skirts and dresses, having long hair, playing as any character with pink or even sitting or standing in a feminine way is enough to trigger his dysphoria. The same can go for characters Error plays as and certain things in games. Even being called a femboy or twink sets him off.
Error loves burritos, pizza and bread. His favorite drink is Mtn Dew, specifically Baja Blast. He also loves Monster but only drinks it on occassion because it gives him anxiety.
Not only is he a trans male and Errorgender (a nonbinary gender), but he is also intersex and could be considered bigender due to being two genders. He doesn't use the flag at all or like being labeled as bigender, however. He prefers being labeled as mostly male or Errorgender. Generally however it depends on his mood and how he feels best describes him in the moment. (Usually male.)
Error isn't just German, but also has some Ukrainian in him. Despite this, he and Crimson are both mostly German, having 32% German, 29% Ukrainian, 21% Thai and 18% American in them.
Error is canonically a "weird kid", having been into Gacha Life, Bendy, Cartoon Cat, SCP, Hello Neighbor, CountryHumans, animation memes, Creepypastas, My Little Pony, Five Nights at Freddy's and Yandere Simulator. He grew up watching CoryxKenshin, DanTDM, Jacksepticeye and Synnibear03. He no longer supports Synni but still adores Jacksepticeye. None of the other characters ever had a "weird kid" phase like Error.
An official video going over Error's full lore is uploaded to Error's YouTube channel. It can be accessed here.
Error does whatever he is told by those only in the Chaos Polycule. However he mostly listens to Jay and Null. He acts like an actual dog, sitting when told to sit and standing when told to stand.
He is canonically a country boy at heart.
Error has the ability known as "Mirror". This ability steals any weapons, powers and stats of another person and sometimes even abilities. Even when it contradicts other powers and stats, Error keeps them since he is a god, but never uses them unless absolutely needed.
Error is immortal and can't canonically die. When a user is soul bound to him, they cannot die either. This means the entire polycule can't die, including offspring.
He canonically has an overbite.
Error sees things differently. While others see normally, some objects to him appear as glitchy and broken textures. This also happens to others, but isn't as common.
Error craves attention, regardless if good or not. This is strictly a trauma response after being groomed.
He hates the cold, especially the snow, and prefers staying inside and drinking hot cocoa with his partners and children.
He canonically uses Linux Mint, specifically the Cinnamon build.
June 1st is he and Jay's anniversary.
The reason Error remembers what happened to him at age two was because, when he committed suicide, his memories flashed before him, hence why he knows when exactly the abuse started. That, and Crimson explicitly told Error when it happened since he wanted confirmation of the timeline.