Jac is a fun loving and adventurous woman who has spent most of her life around giants. Because of this she is used to them, and is maybe too comfortable around them, for she has a reputation of being bold and fearless- standing her ground with even the tallest of them.

Energetic, agile, and full of determination, Jac is known for being the life of the party wherever she goes. She can be mischievous and pretty reckless at times, though she somehow always manages to land on her feet. She cares deeply for her buds, in particular with Richard Yamada, who she shares a special, sometimes magical bond with.

Jac grew up in a port town where giants and tinies often cross paths, but due to a past incident she had become separated from her parents and was eventually taken in by the Finchers, a small family of giants, at the age of 12. Much about her past aside from this fact is something of a mystery to anyone besides herself, though it is rumored that she was a descendant of a prestigious line of hunters.

Jac is currently employed at an integrated chocolate factory- and on occasion shenanigans ensue. Thankfully she can always run to Richard for helping her out of sticky situations. Despite her occupation, do NOT give her excessive amounts of sugar- for this will accelerate her energy to astronomical levels.

Jac and Richard share a very close bond, one that forged into a Link, which is a special ability Wile giants have that allows the two to share subtle magical energy between them. Jac is aromantic, so while the pair are no longer romantically involved, they grow to eventually become queerplatonic partners over the course of the series.