Sunny is Pac-Man's mother. She along with her husband Zac was presumably frozen by the Pacinator and then supposedly given to Apex who claims to have harnessed the energy of all the yellow ones. There is some level of ambiguity to the final fate of her and Zac at present.
As Zac's fedora seems to be a nod to the original Pac-Man from the 1980s cartoon, Sunny has brown hair like Pepper from the same show.
She was the little sister of Spheria, Pac's aunt.
Sunny was known for her cooking.