The New York Cosmos soccer team is an actual American soccer team which managed to hire the Brazilian soccer player Pelé in the late 1970s.
Also known as "Guns, Buns and Fun in the Sun."
While in the cell, the gang communicates with a special Morse code called Wabun. Unlike the usual Morse Code, each symbol of Wabun Code represents Japanese kana.
The plane that lands in Rio says "LUPAN AIRLINES".
Zenigata acts more like his early Part 1 self in this episode, having a complete animosity towards Lupin, crowing about his execution and having him shot at.