Skeletons

Skeleton monsters, or just simply referred to as skeletons, are a species of monster. Like many other species of monster, skeletons are shown to have a special set of skills unique to their species, and in a few cases unique to families.

Appearance
Skeletons are shown to come in a wide, diverse range of different builds, heights, proportions, and skull shapes. Their skeleton resembles a human skeletal system. However, most are not realistic to a human skeleton due to them never being human previously, and skeletons being skeleton MONSTERS, thus having unhuman skull shapes and proportions. The skelebros are a good example of this. Skeletons can have a heart-shaped or a triangular nose socket. All have a seemingly permanent smile. Lacking eyes, skeletons have white glowing pupils. However, some may lack pupils, thus likely impairing their vision.

Every skeleton has a color that represents them on many levels. This includes their magic color (for the skelefam, this includes their telekinesis pupil color), their SOUL color, and sometimes favorite color.

Skeletons, after poofing, can entirely change their SOUL/magic color if they wish. So far, Martel's the only case of this, in which his went from blue-gray to gold. However, his special SOUL mode (blue-gray) is still the same.

Magic
Skeletons typically use magic through their dominant hand. The ring only appears in one of the eyes, specifically the eye that is on the same side as their dominant hand. The ring is the same color as their magic. For example, Sans is left-handed and has cyan magic. Therefore, his eye ring appears in his left eye as cyan. Skeletons with a higher amount of HOPE has a boost in magic power, for example Ariel and Papyrus.

Universal Unique Abilities

 * Teleportation
 * The disappearance/appearance of pupils that appear to reflect a skeleton's emotion.
 * If a skeleton that naturally has pupils, their pupils can disappear if angry, distressed, or upset. A notable example of this is Sans and Ariel.
 * If a skeleton naturally does not have visible pupils, it is the opposite; the pupils can appear if the skeleton is angry, distressed, or upset. A notable example of this is Gaster and Papyrus.
 * Bone attacks of varying shapes and sizes, typically variously sized femur shaped. Some may be blue, green, or gray attacks.

Skelefam-Exclusive Magic

 * SOUL mode BLUE
 * Gaster blasters
 * Telekinesis

Individual Unique Magic

 * Calibri has the ability to do pyrokinesis and fire magic, and can turn normal bone attacks into flame ones. He also can manipulate the fire to be harmless to the touch, which includes his pet fire Pyro.
 * Martel has a special SOUL mode (Blue-Gray), which allows him to summon magic mirrors that will mirror attacks, causing the attacker to attack themselves.

Skelefam

 * Sans: He is Shae and Papyrus's older brother and the son of Ariel and Gaster.
 * Papyrus: He is Shae and Sans's younger brother and the son of Ariel and Gaster.
 * Gaster: He was the previous Royal Scientist until he was shoved into the CORE. He is Sans and Papyrus's father (and Shae's adoptive father) and Ariel's husband. He is a fusion between WD and Aster.
 * Ariel: She was a captain of the Royal Guard. She is Sans and Papyrus's mother (and Shae's adoptive mother). She is Gaster's wife.
 * Cooper: A major supporting character. Aster's (And to a technical extent, Gaster's) brother. He is Sans and Papyrus's uncle (and Shae's adoptive uncle). He is Sofia's adoptive father and Martel's fiance. He works at a bar as the bartender.
 * Elvira: The paternal grandmother of the skelebros, the adoptive grandmother of Shae, and the mother of Aster and Cooper. She is Adine's wife.
 * Adine: The paternal grandmother of the skelebros, the adoptive grandmother of Shae, and the mother of Aster and Cooper. She is Elvira's wife.
 * Helvetica: WD's brother, the skelebros' paternal uncle, Ariel's brother-in-law, and Shae's adoptive uncle, who recently began healing his relationship with his family, after having going to AA. He is Conroy's boyfriend.

Non-Skelefam

 * Martel: He was an assassin until he met the gang. He lives at the barn with the Wright brothers. He is Sofia's adoptive father and Cooper's husband.
 * Calibri: He is in the RG in Papyrus's squadron. He is married to Belle, Emily's sister.
 * Tinero: He is in the RG in Papyrus's squadron. He is currently engaged to fellow squadron member Oswald.
 * Oswald: He is in the RG in Papyrus's squadron. He is currently engaged to squadron member Tinero.

Trivia

 * Even though she married into the family, Ariel has the ability to use Gaster Blasters due to her (romantic) bond to Gaster.
 * The reason the skelefam has seemingly more special magic unique to family is because Gaster researched and developed many new magic tactics, teaching his wife, sons, and other family members said magic.
 * Gaster is the one who had developed the Gaster blasters, which may be why him, his sons, and Ariel are the only ones who know how to use them.
 * However, anyone related to Gaster will have the ability to use them, they just have to learn how to use it.
 * Both WD and Aster can use the Gaster blasters, even if unfused.
 * Skeleton monsters can bleed due to blood being created in the bone marrow.