Aloysius "Nosey" Parker is a fictional character introduced in the British mid-1960s Supermarionation television series Thunderbirds, who also appears in the film sequels Thunderbirds Are Go (1966) and Thunderbird 6 (1968) and the 2004 live-action adaptation Thunderbirds.
Parker is employed at Creighton-Ward Mansion by Lady Penelope, serving as her butler and chauffeur (driving FAB 1, a modified, pink Rolls-Royce). Like Penelope, he is an International Rescue field agent. Born in London, Parker speaks with a heavy Cockney accent, although he frequently attempts to speak with Received Pronunciation (most notably for his catchphrase, "Yes, M'Lady").
Parker is a reformed criminal, having served prison sentences for cat burglary and safecracking. His criminal exploits, coupled with a prominent facial feature, earned him the nickname "Nosey" (this may also be a reference to his nosiness – he eavesdrops on his employer's conversations in "Vault of Death" and Thunderbird 6). He was rescued from a life of crime by Penelope, who recruited him as an aide in her espionage activities. Parker's underworld contacts frequently prove useful during the pair's missions (such as in "The Cham-Cham", when he blackmails a talent agent to have an undercover Penelope pass off as a nightclub singer).