One half of the YouTube channel Couple Reacts, where she uploads daily K-Pop reaction videos with her boyfriend Ali Harmsworth. They have 190,000 subscribers and 85 million overall views. She also started her own channel called Gena Casey which has beauty, lifestyle and reaction content.
She studied film and media in college. Their first video was uploaded on May 21, 2017, and was titled "BF & GF React to K POP for the first time (BTS - Not Today)."
On May 18, 2018, they posted the video "BTS 'FAKE LOVE' Official MV - BTS Reaction (Couple Reacts)". Their most popular video, it has over 600 thousand views. She has a massive scar on her chin from being hit in the face by a scooter when she was young.
She is an only child of parents Tracy and Gary. She has triplet cousins named Shane, Liam and Ryan.