Also known as Kid, Hero, Gavvy
Age 12 (before three-year-gap), 15 (after three-year-gap)
Origin Castle City
Relatives Sarah (mother), Nancy (aunt), Judy (sister)
Spouse Chloe (girlfriend)
Vulnerable to Paralysis, Freeze
Location Grassy Valleys (before three-month-gap), Castle City (after three-month-gap)
Appears in Mother 4: The New Pig King
Gavin is the main protagonist of Mother 4: The New Pig King, and is analogous to Ninten, Ness and Lucas in the canon Mother series. He is described as being smart and resourceful. His main weapons are baseball bats.