Baby Kitty is the infant version of adult Kitty Kat, acting as Baby Felix's primary love interest throughout the series. She admires and aspires to emulate her future self, Kitty Kat. Her personality blends sweetness with curiosity, and she frequently joins adventures alongside Baby Felix and their friends.

She maintains a close friendship with Mimi, their interactions consistently part of group activities and storylines. Mutual romantic feelings exist between Baby Kitty and Baby Felix, demonstrated through affectionate gestures like blown kisses and shared moments during their adventures.

Her character design reflects the adult Kitty in a younger form, typically shown in age-appropriate attire consistent with the series' infant character aesthetic. Her core traits, relationships, and role remain consistent without significant evolution across the series.

Information regarding appearances or development in movies, OVAs, or spin-off media is unavailable. Similarly, no pre-series background or familial history is established within the available material.