Sprite

Sprites, known in their initial, unprototyped form as Kernelsprites, are entities released from the Cruxtruder when first opened when a person is setting up after beginning to play Sburb. Before entry and after a single, normal prototyping, the sprites appear as simplistic floating heads within the kernel. However after hatching, or a HS 3049 (second prototyping) HS 4827 (or a) they appear in a ghost-like form possessing a tail. Despite their name and their ghostly appearance and abilities they have been HS 8278 (confirmed to be corporeal) and are considered to be alive (although arguably undead).

Sprites are meant to serve as a player's guide, but they also have functions important to a session. Despite serving as a guide sprites cannot accompany their players through The Seven Gates until they have unlocked the ability to do so at which point the sprite gives the player a pendant which they can use to summon the sprite.

Sprites are HS 5846 (apparently drawn to the Battlefield) at some point for unknown reasons. However the trolls' Lususprites were all said to be dead and were not seen during the battle against the Black King, it is possible they were killed by meteors during the Reckoning, though this is unconfirmed. However during Cascade, Davesprite and Jadesprite were seen almost being struck by a meteor without any apparent attempt to flee.

Purpose
By combining sprites with inanimate objects, or living or formerly living beings in a process known as prototyping, the objects or beings become the sprite. The sprite or the individual(s) prototyped are given access to a wealth of knowledge about Sburb and their corresponding player's personal quest, with the ability to convey the information limited by intelligence of the sprite which is limited to that of its composing parts, as seen with Jaspersprite, who struggles to convey and understand complex concepts. They are supposed to be coy in about the information, only revealing it in vague statements, riddles, or when it is deemed appropriate, however they are perfectly capable of being direct with the information as seen with Davesprite who offers to tell the alpha Dave everything. Sprites do have holes in their knowledge of Sburb, most notably in regards to the Denizens and the Choices they offer.

Along with guiding the player they can also aid in combat, possessing the ability to create beams of energy and/or objects which can be used as an attack, heal the player and telekinetically pick up objects. The nature of their abilities is determined by the prototypings, with Nannasprite seen creating house hold appliances and food, Calsprite seen creating smuppets, Davesprite being able to use his stomach sword as a weapon and Becsprite appeared to be able to enhance his energy beam with his first guardian powers. Sprites can also use their conjuration powers for non-combat purposes, as seen when Nannasprite conjured a bed and ovenHS 4701, and when Davesprite used his sprite powers to scribble on John's Armageddon poster / letterHS 6244HS 6271. Sprites are also capable of passing through solid objects, which sometimes leaves behind ectoplasmHS 2185HS 6639.

A prototyped sprite, upon entering The Medium, will divide into a kernel and a sprite, and then the kernel will also divide in two, carrying the prototyping data to spires on Prospit and Derse. The data modifies the Underlings players face and the Royals of the light and dark kingdoms. Because the sprite only splits upon entering the Medium and never again, only the prototyping done before entering the Medium will affect the Underlings and Royals. (For example; John prototyped his sprite with a harlequin doll before entering the Medium, and with his grandma's ashes after entering the Medium, but the Royals and Underlings only were affected by the harlequin prototyping.) A sprite entering the Medium also causes the the Battlefield to grow, with each entry of a prototyped sprite causing it to grow further. The final form of the Battlefield can only be reached by all players prototyping at least once before entry, as the final form of the Battlefield is required in order to grow the Genesis Frog and thus win the game.

A session with no pre-entry prototyping is called a void session. A lack of spires on a session's Prospit and Derse (as well as orbs on the Queens' rings and Kings' scepters) are indicative of a Void session. In such cases the Kernelsprite is unaffected by entry and instead the kernel disappears upon prototyping.

When a single player attempts to initiate a session a sprite's role as a guide is discarded and instead it serves as the player's entry mechanism, replacing the Cruxite artifact, by collapsing into a black hole and transporting the player's entire home planet into the session.

Prototyping
Prototyping is where an object, or living or dead organism is combined with the sprite. Each individual sprite can be prototyped twice, although they only need to be prototyped once prior to entry to make a session viable, and the second prototyping can still be undertaken post-entry, however with the kernel gone the information will not be dispersed. Kernelsprites that have not been prototyped pre-entry are HS 6729 (shown to) remain in their HS 7540 (circular form.) Second tier prototyping mostly works the same as first tier, except that extremities of the sprite such as a HS 2098 (hand) or HS 4289 (arm) will not lead to prototyping - touching the core of the sprite, or full-body contact, appears to be necessary.

While inanimate objects appear to act as templates for the sprite affecting its behavior and personality, living or deceased beings do not merely act as a template for the sprite to imitate, but rather literally become the sprite with the deceased being resurrected, including bringing the soul back from the afterlife. The Kernelsprite also has an innate attraction to the dead or soon-to-be-deceased, with almost all Kernelsprite across all sessions ever played being prototyped with such individuals.HS 3989

While the physical traits and associated abilities of prototypings are cumulative upon a sprite, the mental identities of the prototyped components are not. When people have been prototyped with animals or objects, or animals prototyped with objects, they keep their identity, with the other prototyping only influencing their instincts and some behavior. However in the case of two components of an equal "level" the two different identities are merged, as seen with the trollsprites.

What constitutes a single component is complex, as two things combined into one can count as a single prototyping, while a single component that is existing in multiple pieces can count as a single prototyping. Prototyping two separate components simultaneously also appears to use up both prototypings.

Sprites with unstable components or conflicting prototyping are liable to self-destruct. Tavrisprite "tavrispl♉ded" itself only minutes after being created due to the irreconcilable personalities it possessed. Jadesprite, while she did not self-destruct, released a burst of energy similar to Tavrisprite soon after being created due to being upset over being revived, this was exacerbated by her other prototyping causing her to see the Green Sun. It is unknown if this was her simply losing control of her first guardian powers or a failed attempt at self-destruction, as first guardians are nearly indestructible it could possibly have prevented her self-destruction. Even though the combination of Feferi's and Nepeta's personality seemed stable, Roxy's Fefetasprite exploded  dear, sweet, precious, fefetasploded as well after Erisolsprite and Arquiusprite simultaneously kept addressing a specific part of her personality.

While sprites are supposed to act as a guide to the player, a player is also capable of prototyping themselves and becoming their own sprite. This can be used to circumnavigate the normal process by which information is revealed, as well as giving the player a power boost but at the expense of having no one to assist the player for parts of the session. However, alternate selves can also be prototyped to varying effect.

It has been shown that a tier 1 sprite can be prototyped with another sprite. Jaspersprite (tier 2) was combined with Rosesprite (tier 1) to create Jasprosesprite^2. This process effectively creates a tier 3 sprite, though it has yet to be referenced as such in canon. The unique prototyping resulted in many peculiar changes to the sprite, including the discarding of the usual "sprite tail" in favor of actual legs. In addition, the sprite flashes constantly between the two original sprites' color schemes.

The B2 kids' sprites
As a void session, nothing was prototyped pre-entry. As such, none of the prototypings have any effect on the Medium or the royalty. In the pre-retcon timeline, Gamzee prototyped three of the sprites with two trolls each, only the prototyping of one of these sprites was seen during which he prototyped both trolls simultaneously. As such, it is likely he prototyped the other two in the same manner. Dirk's sprite was only prototyped with one troll by Gamzee. It was subsequently prototyped again by Dirk thus making it the only sprite of the session confirmed to not have its prototypings occur simultaneously and the only sprite to have a non-troll component.

In the post-retcon timeline, Vriska managed the prototyping instead of Gamzee. She prototyped Tavros individually into Jane's sprite, and once again Equius and Lil Hal were prototyped into Dirk's sprite. Jaspersprite prototyped Pre-retcon Rose into Roxy's sprite after Roxy's funeral for Rose, unbeknownst to Roxy. Jake's sprite currently remains unprototyped, as Vriska plans to use it in the event of an emergency and judges that she should not revive any of the remaining corpses (as she had planned for Roxy's sprite as well before learning that it had been prototyped by Jaspersprite). The latter sprite's whereabouts are unknown, but likely back in its respective player's planet.

The trolls' sprites
While it HS 3988 (was revealed) what all the trolls prototyped with, only half of the trolls' sprites were ever seen, and only four of the trolls had their sprites named within the comic. However, given the consistency of sprite names, the remaining names were easily surmised.

Dead session sprites
Sprites in dead sessions do not serve the same purpose as in other sessions; instead it acts almost like a replacement for the cruxite artifact. Soon after being released the kernelsprite collapses into a black hole and grows to a massive size, large enough to engulf the player's planet, sending the entire planet to the Medium. The HS 7161 (only seen instance of this) was when Caliborn entered his session. Unlike other sprites, his alternated between two colors, his and Calliope's blood colors, despite Caliborn being the sole player. The exact reason for this is unknown.

In the only seen dead session, prior to entry there were signs the session had potential to be a multi-player session. Whether this is the case or not for all such sessions is unknown. If it is the case that would likely mean all dead sessions require a single player to reject the other player(s) and play by themselves. It was speculated that as the other player(s) are prevented from playing that their sprites and the player's sprite are all released at once. This could potentially cause them to prototype each other and collapse into the black hole, thus allowing entry into the dead session. However Andrew HS 7397 (explained to Caliborn) that it was a single kernel that collapsed.

Note

 * The names of eight of the trolls' sprites and tier 1 prototyping of John's sprite were never revealed; the names listed here are conjecture based off what was prototyped
 * Aradiasprite is the only prototyped troll to not have her sign after prototyping. She was combined with a sign-less animal though.
 * During Vriska's HS 7286 (first encounter) with alpha John in the dream bubbles, she claims that the (Tavrisprite)  unless her  during the 3 year meteor trip between when she died and when her body was prototyped, which would mean that a sufficiently decomposed corpse would not be prototyped. Contrary to this, Nannasprite was prototyped from a jar of Nanna's ashes, which is about as decomposed as a corpse can possibly get.
 * However, HS 4084 (trolls do not bury their dead, leaving them out for wild animals), so Vriska may have simply associated improper preservation with being devoured by random wild animals as per the norm of her culture.