Sucrose loves experimenting and spends most of her time researching on bio-alchemy, stating that she likes to discover the secrets of life. Her research often yields numerous results that she often labels every unique variable as a result of its own, regardless of how useful said result may be. She spends an immense amount of time researching that she finds herself quickly bored whenever she takes a break.
Due to spending most of her time researching and experimenting, Sucrose is a recluse. She has trouble talking with others, as she frequently worries about unintentionally offending them. Lisa remarks that she is hopeless when talking to people, as she is very timid and easily frightened, especially by people of imposing status, such as Jean and Eula. However, she does not share the same issue when talking about bio-alchemy or Albedo. She reveres Albedo to the point that she considers him to be a true gentleman and maintains an excessively formal manner towards him, despite both of them being at a similar age.
Despite her meek nature, Sucrose is also compassionate and humble. In spite of her social anxiety, she sympathizes very well with those who are equally or even more shy and awkward than herself. She's also supportive of other people's academic pursuits, as shown by her support for Collei's studies and Klee's Jumpy Dumpty creations. She's also close to her fellow alchemists Timaeus and Albedo, supporting and respecting them in research and other aspects of their life. However, she will not shy away from honest criticism of her friends, such as Timaeus' research or Albedo's bad habits, even if doing so scares her.
