Main contact of Twilight (Loid Forger) at WISE and previously involved in war between West and East. Not much has been to shown to get an understanding of her personality but from what's been shown, it's that she is similar to Twilight in which she is dedicated, skilled and logical with her approach to ideas but still is a somewhat impatient person. It can be assumed that she doesn't really understand kids, as seen when she told Loid to just bribe Anya with candy.
It has been shown she once had a daughter of a similar age to Anya, but, possibly lost her in a war. It can be assumed based on her previous actions that she had her daughter quite some time ago and, as a result, no longer knows how handle children. Though, she is still shown to have some motherly instinct left in her. Because of this, she despises war, which could be her reason for joining WISE.
Sylvia seems to have been involved in the war before as she angrily makes a speech about the consequences of war and experiences of soldiers to several university students attempting to start a war between the East and the West, berating them for learning nothing about war in their university.
