Nika Aoi

is a recurring character appearing in the anime and manga series, Beyblade Burst.

Appearance
Nika is a young schoolgirl with pink hair and orange eyes. She is always seen with pigtails, which are held up with two star-shaped hair bobbles. Nika wears orange overalls with a soft yellow shirt. Around her collar, she wears a red ribbon.

Personality
Due to being a child, Nika has a childish and playful personality. Alongside her twin brother Tokonatsu, they often playfully insult their brother Valt and the other BeyClub members during their training, especially when things aren't going as planned.

Despite this, Nika is shown to be very caring towards others and will openly show concern for them. Following Shu Kurenai's shoulder injury, Nika was very concerned for his well-being and felt guilty as she was the one who caused it. During Beyblade matches, Nika is also very vocal when cheering for a BeyClub member, such as Valt or Shu.

Nika is also shown to be very confident in her abilities as a Blader, but also burst into tears when she conceded a single point against Akio. Nonetheless, she quickly cheered up afterwards.

Beyblades

 * [[Dark Deathscyther .K.U]:

Tokonatsu Aoi
As twins, Tokonatsu and Nika are never seen apart and are seemingly inseparable in everything they do, whether they're visiting friends, supporting their older brother Valt or even heading to school. The two tend to have shared opinions on everything, and always back each other up in conversations with others.

Chiharu Aoi
As her mother, Chiharu shares a maternal bond with both Tokonatsu and Nika. The twins share everything with their mother, and are the main source of information for Chiharu regarding Valt's progress in Beyblade. Both Tokonatsu and Nika are eager to help out their mother however they can, including various work around within Aoi Pan, their family bakery.

Shu Kurenai
Nika appears to have an infatuation with Shu, often swooning over him and being close to him. During his battles, Nika cheers the most for Shu out of the BeyClub members, also shouting about how "amazing" he is. In Surprise! Xhakuenji Special!!, Nika showed off a heart-shaped cookie that she baked for Shu to help him get better.

Nika was also the cause for Shu's shoulder injury in the final rounds of the regional tournament after. Because of this, Nika felt guilty as it caused noticeable long-term problems for Shu, despite the latter's attempt to cover it up as if it never happened.

Trivia

 * Nika is the only female character to have participated in a Beyblade battle in the Burst series.