Sans/Relationships

== Family ==
=== Papyrus ===
Papyrus is Sans's younger brother. They share a positive relationship; Sans cares deeply for him and loves him dearly, and is a doting older brother. The two are really close and are often seen hanging out with each other and playing video games together.
Sans is also considered protective of him, bordering on over-protective, and would do anything to protect him.
=== Shae ===
Shae is Sans's younger adoptive sister. The two have a positive relationship, despite their interactions usually being short. Sans sees her as his sister and will do anything to protect her. The two seem to bicker sometimes.
=== Gaster ===
Gaster is Sans's father. Despite Gaster's eccentric personality and having massively changed since being rescued from the VOID, both in physique and behavior, the two share a positive relationship. Although they tend to bully each other and Sans is often disapproving of Gaster's shenanigans, he sometimes will join in it too depending on what is, given it's not a harmful prank.
Sans shares his love of science with Gaster, allowing them to bond over such subjects, and letting them often hang out together in Gaster's lab. Sans seems to have began copying Gaster's tendency to use text slang in his speech. This heavily implies Sans looks up to him.
=== Ariel ===
Ariel is Sans's mother. They sometimes hang out together and share a positive relationship. When Gaster is up to mischief or Papyrus doing something dangerous for himself, she's usually the first one he tells.
=== Cooper ===
Cooper is one of Sans's paternal uncles. Sans enjoys Cooper's company and sometimes hangs out with him.
=== BB!Papyrus ===
Sans, upon meeting BB, immediately had his brotherly instincts kick in, wanting to help BB, despite him being afraid of him. When Shae reveals him attempting to help would not be possible, devastating a distressed, but understanding Sans. When BB's biological brother had come to their timeline, Sans is one of the first who ended up confronted by BB!Sans. Upon hearing BB!Sans insensitively insulting BB, Sans becomes pissed.
After BB's debut arc, Sans respects that BB may need quite some time to warm up to him, being patient with him.
=== BB!Sans ===
BB!Sans is the first counterpart that Sans meets. Before even meeting him, Sans quickly gains a negative view on him.
=== RG Stooges ===
Calibri, Tinero, and Oswald are long-time friends of Sans's, having being friends since childhood. He enjoys their company and likes to annoy Tinero.