George Cooper Jr.

George Cooper Jr. is the eldest child of George and Mary Cooper, as well as the older brother of Sheldon and Missy Cooper by three years. He has only been mentioned in the series. He was named after his father George Sr. who died before the show started.

His mother calls both him and Missy "dumb as soup" in "The Luminous Fish Effect" (S1E04), though this may be an exaggeration, as this description did not particularly fit Missy when she appeared.

Sheldon mentions him in "The Jiminy Conjecture" (S3E02), saying "I grew up with an older brother and a very contentious twin sister."

Sheldon's family pedigree, depicted briefly in "The Cruciferous Vegetable Amplification" (S4E02), shows a brother as well as a twin sister.

Sheldon mentions in "The Fish Guts Displacement" (S6E10), that his brother would sneak into their father's truck and drink his driving whiskey.

In "The Cooper Extraction" (S7E11) Sheldon mentions "my brother's kidney stone", presumably meaning his.

In "The Fortification Implementation" (S8E20), Sheldon tells Amy that his brother and sister built forts in the living room and wouldn't let Sheldon in, which he hated so much.

In "The Maternal Combustion" (S8E23), Sheldon tells Leonard's mother Beverly that his brother and sister are mouthbreathing idiots.

In "The Matrimonial Momentum" (S9E01), Mary Cooper mentions that Sheldon's brother has a girlfriend and that she would not give her grandmother's ring (which she gave to Sheldon for Amy) to that whore.

Family

 * Grandfather: Pop-pop
 * Grandmother: Meemaw
 * Uncle: Uncle Carl
 * Uncle: Uncle Edward
 * Uncle: Unnamed uncle who gave children gifts like Santa and was not arrested in Oklahoma for his actions.
 * Uncle: Uncle Roger
 * Aunt: Aunt Ruth
 * Father: George Cooper Sr.
 * Mother: Mary Cooper
 * Brother: Sheldon Cooper
 * Sister: Missy Cooper
 * Brother-in-law by Missy
 * Nephew by Missy and her husband