Vegeta initially wished to give his daughter a Saiyan name and had decided on Eschalot (エシャロット Esharotto), however, Bulma chose to name her Bulla before Vegeta could suggest the name.
In-universe her name is spelt Bura.
While she is Vegeta's daughter, Bulla bears almost no physical resemblance to him and looks almost completely like her mother. When she was born, it was jokingly noted that her forehead resembled his and her facial features when angered are similar to his own.
As a baby in Dragon Ball Super, Bulla has an onion-shaped head and triangle strands of blue hair on the top of her head. As a child, during the 28th World Martial Arts Tournament, Bulla wears a white dress with orange polka dots and her hair is tied back in a knot. At the start of Dragon Ball GT Bulla is 9 (10 at the end) and her outward appearance is reminiscent of a teenager: she wears a red midriff top with exposed shoulders, red finger-less gloves that go up to the shoulders, a red mini skirt with a yellow belt buckle, and red thigh-high boots. She also wears a red hairpiece, gold choker, and gold hoop earrings. Her outward appearance in GT makes her seem older, and she is even hit on by two grown men in "The Attack on Vegeta".
Personality EditShe is close friends with two other daughters of the Z Fighters: Pan (the daughter of Gohan and Videl) and Marron (the daughter of Krillin and Android 18). Of the three girls, Bulla is the most assertive of her femininity, especially in comparison to Pan who by Dragon Ball GT has grown into somewhat of a tomboy. Bulla's appearance in GT appears as a more youthful retooling of a common look of her mother's (most memorably during the adventure on Namek, as well as the Androids Saga), while her personality is geared closer towards that of her father.
As a baby, Bulla is shown to always be smiling and laughing. However, she can be picky towards those around her, such as crying when being held by Yamcha and Hercule, whereas smiling when Goku and her family members held her. Unlike her older brother as a baby, Bulla is not intimidated by her father and, upon being held by him for the first time, she smiles and laughs as he frets over what her name should be.