She was voiced by Yap Ee Jean in the Malay version, while Chan Su Ling in the English version.
- Time Manipulation: She can manipulate time speed, or reverse the timeline after gained Ochobot's last energy.
- Enhanced Speed: When her power was mistakenly to be superhuman speed, she can run fast after she catches a cold, though it was no longer be seen after Season 1.
- Enhanced Strength: Despite her size, she deals damage when kicking enemies.
- Enhanced Stamina: She can run far and can be seen rarely being exhausted or tired.
- Genius-level Intelligence: She is a very smart individual and skipped a grade.
Ying is kind to all of her friends. Aside from that, she is a fast-talker and a shy girl. She is also sensitive. In Season 2, when she was shot by the emotion pistol, she became petrified wherever she went.
Ying is a 10-year-old Chinese girl (11 years old in Season 3) with black hair, light skin, and dark brown eyes (Season 1) and light blue (Season 2).
She wears a yellow and orange shirt with horizontal light blue and white stripes on the two long sleeves, dark blue-colored jeans, blue and yellow watch, a pair of white socks, yellow and orange shoes and a yellow and light blue hat with a domo badge. Furthermore, she has a pair of blue, round glasses.
- Whenever she catches a cold, she will sneeze again and again making her powers activate and deactivate.
- It was no longer visible since season 2.
- She is the youngest in BoboiBoy's gang. She is only 10 years old in Season 1 and 11 in Season 2, the oldest is Gopal who is 12 years old in Season 1 and 13 in Season 2.
- Yaya said she is the only one who could beat the creator of the Papa Zola No. 5 video game, proving she's an excellent gamer.
- She is Chinese because she could speak Mandarin words like "謝謝 (Xièxiè)" which means "Thank You".
- Her face was probably inspired from one of the director of the series.
- She is placed in BoBoiBoy's class as she is smart and probably skipped a grade.