Grandma Paguro and Luca have an understanding. She sees the spark in her grandson’s eye, his longing for more, and celebrates it – albeit secretly. Grandma knows that breaking a rule or two is part of growing up, and she’s a little too happy to look the other way if Luca’s rebellious side should emerge. What his parents don’t know probably won’t kill them.
In her sea monster form, Grandma has light magenta scales and purple "hair". She has light pink eyes with a faint yellow sclera and oval shaped pupils. her tail is long and forms a twirl with purple caudal fins, and she also wears a dress and bandana, probably made from seaweed.
Grandma sleeps with her eyes open, which can be a nod to how fish sleep with their eyes open in real life.