Sally

Sally is Jack Skellington's girlfriend (technically speaking). She is a character in all Kingdom Hearts games. She was created by Dr. Finkelstein. Her limbs are sewn on, and they fall off sometimes. She usually has to sew her limbs back on. She is always the voice of reason to Jack, even though he doesn't listen to it sometimes. She is intuitive, and can tell when things that Jack is planning are going to turn out wrong. Sally is one of the main characters in The Nightmare Before Christmas.

Kingdom Hearts
''Dr. Finkelstein's creation. She's patched together from parts that sometimes come off and move about on their own. She loves Jack and tries to steer him in the right direction, though it doesn't always work.''

She appeared in "Tim Burton's The Nightmare Before Christmas" (1993).

Kingdom Hearts: Chain of Memories
''Dr. Finkelstein's helper at the lab. He created her from various odds and ends.'' Sally is secretly in love with Jack.

Kingdom Hearts II
The Nightmare Before Christmas (1993)

''One of Dr. Finkelstein's creations, Sally's patched together with parts that sometimes come off and move around on their own. She's gotten very good at mending herself with a needle and thread. ''

Sally usually helps Dr. Finkelstein around the lab, but she'd much rather spend time with Jack.

Kingdom Hearts and Kingdom Hearts II
In both of these games, Sally, being the voice of reason, tries to convince Jack that his new ideas may have harmful side-effects.

Personality
Sally is an extremely kind and thoughtful person. She is also very smart, always looking ahead and solving problems. She is restless, though. She has never liked being held back by Dr. Finkelstein and often tries to escape.

Trivia

 * Sally is compared to Kairi by Goofy because they have similar personalities.
 * While it is repeatedly implied that Sally loves Jack, it is unknown if the affection is also from Jack to Sally. From his actions in the Kingdom Hearts series, it seems that Jack only sees Sally as a friend. However, their relationship develops dirastically in Kingdom Hearts II as in this game, they are seen dancing together at the end of the story, which reminds Sora of Kairi.
 * Due to Sally's good heart, it is surprising that she wasn't mistaken for a Princess of Heart.