Nagi appeared 3 years after Yoko Usami. His next two successors were alsomale.
Calvin was succeded by Zoey Reeves. There's still no other male Yellow Ranger after him.
Nagi is related to all the Ninnigers except Kinji Takigawa.
Calvin is not related to other Ninja Steel Rangers other than being team comrades.
Nagi is the 18th male yellow ranger of the Super Sentai franchise and the first since Tsubasa Ozu.
Calvin is the 4th male yellow ranger of the Power Rangers franchise, the first since Charlie Thorn and the first and only male Yellow Ranger in the Neo-Saban Era.
Nagi is the youngest member of the main team.
Calvin is the same age as his other team members except Aiden Romero.
Nagi played by Kaito Nakamura and never recast to another actor.
Calvin was originally to play by Chantz Simpson but dropped out and was later recast to Nico Greetham shortly before filming had begun.