Anastasia is a novice Bakugan Brawler, recently brought into Bakugan Battling by her friend Solidor Kasun. She's usually by his side and is usually the one to protct him from thugs and bullies who take advantage of Solidor's sensitivity to light. Her Guardian Bakugan is a Pyrus Siege she nicknames 'the Red Knight'. Like Solidor and Solis Arcturus, she disappeared after she, Solidor, The Red Knight, and Solis Arcturus defeated the rogue Bakugan Romulus. She later reappeared, with cybernetic implants, alongside Solidor and Solis Arcturus a few years later.