I’m glad you asked that, anon. Here’s the answer, from my website.

Sometimes the best friend, and the best support, is someone so close to you, they’re sharing your body with you.

Soulbonds can be an amazing source of emotional and mental support, and they are something that pretty much anyone can experience to a greater or lesser degree.

Soulbonds are a type of fictive headmate that has an attachment to, or some kind of emotional stake in the wellbeing of the soulbonder who hosts them. They are a spiritual phenomenon the originates outside the mind/body of the soulbonder, who calls or attracts the soulbond to them from another world. Being a soulbonder is like being a channeller or medium, except instead of spirits of the dead, one shares mental space with the spirits of fictional characters.

(Soulbonding can be compared with creating a tulpa. The difference is a tulpa is created inside the mind as a deliberate act of creation, and created for a specific purpose, with no existence before they are created. Soulbonds on the other hand are real people before one comes in contact with them.)

Because soulbonds have an emotional attachment and stake in their bonder, they can be an excellent source of emotional support for people in a difficult position in life, or who have experienced trauma or abuse.

A soulbond can be there for you, when no one else is there, to give you words of comfort, advice, or praise. A bond can hold you mentally when you need a shoulder to cry on. Soulbonds can offer their own wisdom and experience to you in unfamiliar situations.

Some bonds can even take over your body for you in times of stress, and deal with situations that would cause you discomfort or distress.

Soulbonds can act as guardians, advisers, friends, and even lovers, and their presence can be a great comfort.

Even if you have never had a soulbond, or any other type of headmate before, you can probably call one. Not everyone can get a soulbond, but I have found that most people who have the desire to find one have the ability for it. Even people who are normally singlets and/or neurotypical can have soulbonds, though singlets usually (not always) are not able to let their bonds use their body completely.

People have all types of characters for soulbonds. Even characters that are typically unpleasant or hostile can make good (if sometimes standoffish) bonds, because they have an emotional link with their bonder. Though, sometimes villainous bonds tend to give advice that sounds good to *them* but would be impractical at best, and illegal/immoral at worst. Still, they are often comforting to have around because they can be very mentally ‘tough’ and ward off a lot of external stress.