She does not like Jimmy due to him being a pain and a nuisance to the Neutron family, but when Jimmy saves the day, revealing Baby Eddie's evil plan, Amanda apologizes to Jimmy and starts to think more positively about him.
Amanda is elderly and has grey hair. Like the other Neutron's (except Jimmy and Eddie), her face is a near-copy and paste of Hugh's. She wears a floral dress.
- She may be Granny Neutron's sister.