Pronouns are classified as: personal, possessive, interrogative, demonstrative, reflexive, universal, negative, indefinite and relative.
[1] In Bulgarian, there are two types of personal pronouns (лични местоимения): long (stressed, free) and short (unstressed, clitic).
Possessive reflexive pronouns agree in gender, number and definiteness only with the owned noun, not with the possessor.
The long forms can be definite or indefinite (for example "моя раница" means "my rucksack (but I have several)" while "моята раница" means "the only rucksack of mine" or "the rucksack of mine of which we have already spoken (but I could have other ones, too)" ), depending on whether the noun they modify is definite or indefinite, but only the first constituent of the definite noun phrase is used with an article ("моят мъж" or rarely "мъжът мой").
Demonstrative pronouns (показателни местоимения) agree in number and gender with the noun they refer to (except for this for quantity).
Personal universal pronouns are used with both singular and plural nouns or on their own and mean all the things or people belonging to a group of one or more – each/every(body).
Quantity universal pronouns are always definite (except for the plural and the neuter form which can also be indefinite, when they are not used with a noun but on their own) and mean the whole number/amount of something – all (the).
The adjective цял (whole) is used with a definite article instead: целият/целия, цялата, цялото (but целите in plural does not have this meaning).
Interrogative pronouns (въпросителни местоимения) refer to an unknown person, object, quality or quantity and agree with the noun they denote in gender and number.
It is used before plural nouns to ask about their quantity (then it is translated as how much/how many), and before an adjective or adverb to ask about the extent, degree, age, etc.
There are three types of indefinite pronouns (неопределителни местоимения): personal (some(one)), for quality (some (kind of)) and for quantity.
Pronouns for formal second person are always in plural, capitalized: Вие, Вас, Ваш, Ви, etc.