Squid's Grandmother is Squid's Grandma who lives in the sea.
Squid's Grandmother created delicious blueberry pie which gave Squid the idea to create a blueberry pie bounce house in Stampy's "Quest" series. It is likely she is squid's aunty's mother. She ate too much blueberry pies when she was a little squid but then lost all her teeth.
She has a wig and carries a handbag around with her. According to Squid she smells like prunes. She does not much teeth, squid said that she has a pruney mouth and a pruney personality