His usual outfit consists of a green shirt and blue pants.
Stanley is generous and helpful, more often than any of his brothers and sisters. His catchphrase is "Wham bam, somebody's in a jam." Stanley always dresses up in a disguise to help, though Henry tells him to take the disguise off.
Stanley is the guitarist of the siblings' band, but he doesn't know how to drive a motorcycle. When the kids break into groups, he always goes with Henry.