Unlike most other Obelisk Blue students, she did not think she was better than other students. A lot of guys were interested in her, but she had her eyes on Jaden. During her first year at Duel Academy, she was one of seven to defeat the Shadow Riders from obtaining the Sacred Beast cards. She also found her long lost brother, Atticus. During her second year, she became of a victim of the evil Society of Light, and was brainwashed and became a member. But Jaden freed her from their power. And during her third year, she was became one of Yubel's prisoners, but was freed after Jaden combined his spirit with Yubel's.
After returning to Duel Academy, Alexis was heartbroken thinking that she would never see Jaden again. But after he mysteriously returned, she was so happy that she confessed her love for him, and they both became a couple. Now, she goes with Jaden on his adventures as the second-in-command of the team (next to Beetles and Jesse). Later on in the sereis, Alexis and Jaden will be married.