Jessica is, in Taylor's words, a blonde with measurements like a Playboy model. As Fenja, she wears Valkyrie-style armor that features countless steel wings, as well as closed-face helms. She carried a sword and shield.
The same power as her sister, a breaker ability that allows her to shrink incoming attacks proportionately to her size. When Fenja is first introduced, Skitter describes her power as giving her the ability to "grow to be three stories tall", and become "a hundred times more durable".
Accompanied Kaiser to the meeting at Somer's Rock and during the raid on ABB territory. Carried her sister and her boss out after they were injured by Lung. At Taylor Hebert's request, she agreed to try and persuade Kaiser not to pursue Bitch's disruption of a dogfighting ring as payment for Bitch saving his life.
I found them. Fenja and Menja were duking it out with Leviathan. Both were nearly as big as he was, which was saying a fair bit. I knew their power warped geometry to make them bigger, simultaneously reduced the effective size of incoming attacks by an inversely proportionate amount. Six times as tall and a sixth of the hurt, on top of the benefits of being bigger.