He is the owner and founder of Fleemco, the company that gives replacements. He is the uncle of Todd and Riley Daring (revealed in "Irreplaceable") which Todd figures out because he says "Don't Judge Me!" like Todd and his craze for sweets like Riley. He couldn't adopt them because he doesn't know how to raise kids, so he sent the replacements, Dick Daring and Agent K.
His brother, Todd and Riley's father, never listened to anyone, which ended up resulting in his children becoming orphans. Conrad wanted his niece and nephew to learn to know better than their father, so he created the Replacements program for them to teach them that lesson.
He also points out that he wore his disguise, because the phones the kids have are video phones.
In the series finale, after the defeat of Dr. Scorpius, Conrad invites Todd and Riley to co-run the Replacement Program for other kids.