Dina emerges as a mysterious winged pixie infant, born from an egg discovered by Johnny, a knight of Splendorius. Her hatching is triggered by Maya and her companions, revealing infantile mannerisms and fragmented speech limited to echoing "Dina"—a name her companions adopt. Bonded to Natalie, she activates the Love Eyes Palette to enable Natalie’s transformation into Glitter Ace. Their alliance fractures when King Mercenare defeats Natalie, forcing Dina to revert to an egg state until the Royal Crystals reunite them, reigniting Natalie’s powers.

Dina’s existence stems from Princess Marie Angelica’s sacrifice: the ruler of Splendorius split her psyche to create Regina and Natalie, her physical form reborn as Dina. This irreversible act ties Dina’s emotional state to a protective shield against Mercenare’s corruption. Negative emotions erode her defenses, empowering their foe, while positivity amplifies her resilience.

After residing with Johnny, Dina magically implants false memories in Maya’s family, posing as Maya’s sister to join their household. Her magic fluctuates with her moods, manifesting through Glitter Charms and Glitter Pads to summon items like milk bottles. These unpredictable surges of power, often during intense joy or distress, prove vital to the Glitter Force’s victories.

Physically, Dina mirrors a human baby with pink hair coiled into heart-shaped buns, azure eyes, and golden markings beneath her eyelids. She dons a yellow onesie, a white bib adorned with a pink heart, and soft purple shoes. Her speech evolves from babble to coherent phrases, marking developmental growth.

Her narrative deepens as her true identity surfaces—Marie Angelica’s corporeal vessel—anchoring her as a linchpin between Splendorius’s magical strife and the human realm. Though childlike, Dina’s emotional equilibrium directly sways the clash between light and darkness, her fragility juxtaposed with her cosmic significance in sustaining balance.