Lillian Dennon is one of the Academy's Martial Arts instructors. She teaches judo and special classes for Bricks and Ultra-Dense students. She also teaches courses emphasizing grace and control, such as Winter term's Exemplar Grace.
She's an older woman, with dark hair with streaks of silver running down to the tips on her shoulders. Despite her fragile-looking appearance, she's one of the most ferocious PK bricks in the United States. Once upon a time, she was a supervillain known as Wildhammer, and her past is a bit more checkered than most. Even in her fifties, everyone can see the fiery attitude of a girl who’d made it her personal mission in life to rip off dozens of wealthy companies in the late sixties. One of the companies she's known to have attacked is Carruthers Industries in Boston, about which the Lamplighter apparently holds a grudge even after decades.
Her tenure in the Thunder Mountain Prison Complex mellowed her out quite a bit. After her release from prison, she ran a private self-defense school for a while before she began teaching at Whateley. Because Setup was her pupil at that self-defense school, she must have started teaching at Whateley sometime after Setup graduated from Whateley—1989 at the earliest, probably several years later.